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This page is updated frequently with new Lasers-related patent applications. Subscribe to the Lasers RSS feed to automatically get the update: related Lasers RSS feeds. RSS updates for this page: Lasers RSS RSS


Systems and methods for sailboat mast alignment

Dynamic wavelength virtualization and/or on-demand flow provisioning in optical networks

Date/App# patent app List of recent Lasers-related patents
08/28/14
20140241726
 Temperature controlled multi-channel transmitter optical subassembly and optical transceiver module including same patent thumbnailnew patent Temperature controlled multi-channel transmitter optical subassembly and optical transceiver module including same
A temperature controlled multi-channel transmitter optical subassembly (tosa) may be used in a multi-channel optical transceiver. The temperature controlled multi-channel tosa generally includes an array of lasers optically coupled to an optical multiplexer, such as an arrayed waveguide grating (awg), to combine multiple optical signals at different channel wavelengths.
08/28/14
20140241717
 Dynamic wavelength virtualization and/or on-demand flow provisioning in optical networks patent thumbnailnew patent Dynamic wavelength virtualization and/or on-demand flow provisioning in optical networks
A network apparatus used in an optical network is disclosed. The network apparatus includes one or more first tunable and temperature controlled (ttc) lasers, one or more transmitters each of which is connected to one of said one or more ttc lasers, one or more second ttc lasers, one or more digital signal processing (dsp) transponders (tpnds) each of which is connected to one of said one or more second ttc lasers, one or more receivers, and a controller to control said one or more transmitters and said one or more dsp tpnds, wherein said one or more transmitters defragment an optical access spectrum, and said one or more dsp tpnds exploit a newly available spectrum.
08/28/14
20140240977
 Light source system and laser light source patent thumbnailnew patent Light source system and laser light source
Disclosed are a light source system and a laser light source (300). The laser light source includes two groups of laser groups (20a, 20b), wherein at least one group of laser groups includes at least two lasers (21a, 21b, 21c, 21d), and the light beams (l1) generated by the two groups of laser groups are in the same direction and parallel to each other.
08/28/14
20140240712
 Method and system for detecting optical ring resonator resonance frequencies and free spectral range to reduce the number of lasers in a resonator fiber optic gyroscope patent thumbnailnew patent Method and system for detecting optical ring resonator resonance frequencies and free spectral range to reduce the number of lasers in a resonator fiber optic gyroscope
A resonator fiber optic gyroscope (rfog) is provided. The rfog includes a gyroscope resonator having a clockwise input port and a counter-clockwise input port; a first laser configured to couple a clockwise optical beam into to the clockwise input port; a clockwise pound-drever-hall modulation generator to modulate the clockwise optical beam with a resonance tracking modulation before the clockwise optical beam is coupled into the clockwise input port; bias correction electronics; fsr-detection-and-servo electronics including a switch communicatively coupled to the clockwise pound-drever-hall modulation generator; a clockwise transmission detector configured to receive an optical beam output from the counter-clockwise input port and output signals to the bias correction electronics and the fsr-detection-and-servo electronics; and a second laser configured to couple a counter-clockwise optical beam into to the counter-clockwise input port, wherein the fsr of the gyroscope resonator is measured based on the pound-drever-hall modulation of the clockwise optical beam..
08/28/14
20140239250
 Etched-facet lasers having windows with single-layer optical coatings patent thumbnailnew patent Etched-facet lasers having windows with single-layer optical coatings
An edge-emitting etched-facet optical semiconductor structure has a substrate, an active multiple quantum well (mqw) region formed on the substrate, and a ridge waveguide formed over the mqw region extending in substantially a longitudinal direction between a waveguide first etched end facet and a waveguide second etched end facet. A mask layer used to form windows in which the etched end facets are disposed consists of a single dielectric material disposed directly on the ridge waveguide.
08/28/14
20140237831
 Systems and methods for sailboat mast alignment patent thumbnailnew patent Systems and methods for sailboat mast alignment
Systems and methods for sailboat mast alignment are provided. In some embodiments, a system for alignment of a sailboat mast comprises a mounting bracket configured for attachment to the mast, and one or more lasers pivotally connected to the mounting bracket to enable the one or more lasers to be positioned at an index angle relative to the mast on both sides of the mast..
08/21/14
20140236021
 Near-infrared super-continuum lasers for early detection of breast and other cancers patent thumbnailNear-infrared super-continuum lasers for early detection of breast and other cancers
A system and method for using near-infrared or short-wave infrared (swir) light sources for early detection and monitoring of breast cancer, as well as other kinds of cancers may detect decreases in lipid content and increases in collagen content, possibly with a shift in the collagen peak wavelengths and changes in spectral features associated with hemoglobin and water content as well. Wavelength ranges between 1000-1400 nm and 1600-1800 nm may permit relatively high penetration depths because they fall within local minima of water absorption, scattering loss decreases with increasing wavelength, and they have characteristic signatures corresponding to overtone and combination bands from chemical bonds of interest, such as hydrocarbons.
08/21/14
20140234865
 Instrument and method for optical particle sensing patent thumbnailInstrument and method for optical particle sensing
Devices for detecting particle sizes and distributions using focused light scattering techniques, by passing a sample through a focused beam of light, are disclosed. In one embodiment, the devices include one or more lasers, whose light is focused into a narrow beam and into a flow cell, and dispersions are passed through the flow cell using hydrodynamic sample injection.
08/21/14
20140233596
 Semiconductor lasers and etched-facet integrated devices having non-uniform trenches patent thumbnailSemiconductor lasers and etched-facet integrated devices having non-uniform trenches
An edge-emitting etched-facet optical semiconductor structure includes a substrate, an active multiple quantum well (mqw) region formed on the substrate, a ridge waveguide formed over the mqw region extending in substantially a longitudinal direction between a waveguide first etched end facet disposed in a first window and a waveguide second etched end facet disposed in a second window, and first and second trenches having non-uniform widths extending in substantially the longitudinal direction between the first and second windows.. .
08/21/14
20140233041
 Computerized movable laser system for radiographic patient positioning patent thumbnailComputerized movable laser system for radiographic patient positioning
A system for radiographic patient positioning includes at least one laser. An orientation sensor is associated with a laser and the orientation sensor produces tilt data indicative of an orientation of a laser.
08/21/14
20140233022
Apparatus for focus beam analysis of high power lasers
An in-line laser beam waist analyzer system includes an optical prism that picks off a portion of a second surface reflection from either a laser processing focus lens or a protective debris shield for the processing lens and directs that focused light to a pixelated detector. This provides real time monitoring of the focused laser beam while it is processing material by welding, cutting, drilling, scribing or marking, without disrupting the process..
08/21/14
20140233021
Apparatus for focus beam analysis of high power lasers
An in-line laser beam waist analyzer system includes an optical prism that picks off a portion of a second surface reflection from either a laser processing focus lens or a protective debris shield for the processing lens and directs that focused light to a pixelated detector. This provides real time monitoring of the focused laser beam while it is processing material by welding, cutting, drilling, scribing or marking, without disrupting the process..
08/21/14
20140231647
Compact fiber-based scanning laser detection and ranging system
A system for short-range laser detection and ranging of targets can provides rapid three-dimensional, e.g., angle, angle, range, scans over a wide field-of-view. Except for the final transmit/receive lens, the disclosed ladar system can be implemented in an all-fiber configuration.
08/21/14
20140231634
Apparatus for focus beam analysis of high power lasers
An in-line laser beam waist analyzer system includes an optical prism that picks off a portion of a second surface reflection from either a laser processing focus lens or a protective debris shield for the processing lens and directs that focused light to a pixelated detector. This provides real time monitoring of the focused laser beam while it is processing material by welding, cutting, drilling, scribing or marking, without disrupting the process..
08/21/14
20140231524
Barcode scanner having laser alignment indication
A barcode scanner having a laser alignment indication mainly has an alignment light source module and a reading light source module. After the alignment light source module is aligned with a barcode, the reading light source module is started to read barcode information.
08/14/14
20140227559
Method for machining a metallic frictional surface using lasers; and a corresponding sheet-metal part
A method for machining a metallic frictional surface for wet-running applications is provided in which the metallic frictional surface is machined using a laser.. .
08/14/14
20140226692
Organic semiconductor lasers by triplet managers
A first device is provided. The device includes an organic semiconductor laser.
08/14/14
20140226691
Iii-v photonic crystal microlaser bonded on silicon-on-insulator
Novel methods and systems for miniaturized lasers are described. A photonic crystal is bonded to a silicon-on-insulator wafer.
08/14/14
20140224778
Marking apparatus with a plurality of gas lasers with resonator tubes and individually adjustable deflection means
The invention relates to a marking apparatus (100) for marking an object with laser light, comprising a plurality of gas lasers (10) and a control unit for individually activating each of the gas lasers (10) to emit a laser beam according to a sign to be marked. The gas lasers (10) are stacked such that the laser beams emitted by the gas lasers (10) form an array of laser beams, in particular a linear array with parallel laser beams, each gas laser (10a-i) comprises laser tubes (12) that at least partially surround an inner area (5).
08/14/14
20140224777
Marking apparatus with a plurality of lasers, deflection means, and telescopic means for each laser beam
The invention relates to a marking apparatus for marking an object with laser light, comprising a plurality of lasers and a control unit for individually activating each of the lasers to emit a laser beam (90a-i) acording to a sign to be marked. A set of deflection means (30) for directing the laser beams (90a-i) toward the object to be marked is provided, a set of telescopic means (40) comprising at least one telescopic means (40a-i) per laser beam (90a-i) is provided, and each telescopic means (40a-i) is adjustable for individually setting a focal length of the respective laser beam (90a-i)..
08/07/14
20140221718
Excess air control for cracker furnace burners
A method for control of the air/fuel ratio of the burner(s) (excess air) of a thermal cracker includes three steps. The thermal cracker has three consecutive zones or portions through which combustion gases pass, a firebox portion, a bridge wall portion and a convection portion the first step is to direct a wavelength modulated beam of near infrared light from two different tunable diode lasers located in the bridge wall portion through combustion gas from the burner to a pair of near infrared light detectors, each positioned to receive the wavelength modulated beam of near infrared light from a different one of the two tunable diode lasers to generate a detector signal.
08/07/14
20140219604
Flexible 3-d photonic device
Three-dimensional flexible photonic integrated circuits on silicon are fabricated in semiconductor wafer form and then transferred to silicon-on-polymer (sop) substrates. Sop provides flexibility for conformal mounting with devices capable of maintaining performance when dynamically deformed to allow routing of light in x, y and z directions.
08/07/14
20140219306
Multicolor photonic crystal laser array
A multicolor photonic crystal laser array comprises pixels of monolithically grown gain sections each with a different emission centre wavelength. As an example, two-dimensional surface-emitting photonic crystal lasers comprising broad gain-bandwidth iii-nitride multiple quantum well axial heterostructures were fabricated using a novel top-down nanowire fabrication method.
08/07/14
20140219305
Semiconductor lasers and etched-facet integrated devices having h-shaped windows
An edge-emitting optical semiconductor structure has a substrate, an active multiple quantum well (mqw) region formed on the substrate, and a ridge waveguide extending between first and second etched end facets. The first etched end facet is disposed in a first window, while the second etched end facet is disposed in a second window.
08/07/14
20140219301
Reflectivity-modulated grating mirror
The invention relates to vertical cavity lasers (vcl) incorporating a reflectivity-modulated grating mirror (1) for modulating the laser output. A cavity is formed by a bottom mirror (4), an active region (3), and an outcoupling top grating mirror (1) formed by a periodic refractive index grating region in a layer structure comprising a p- and a n-doped semiconductor layer with an electrooptic material layer (12) arranged there between.
08/07/14
20140219297
Anisotropic beam pumping of a kerr lens modelocked laser
Apparatus and methods for anisotropic pumping of a kerr lens modelocked laser. Direct diode laser pumping of an ultrafast kerr lens modelocked laser oscillator is accomplished.
08/07/14
20140219296
Compact coherent high brightness light source for the mid-ir and far ir
Compact laser systems are disclosed which include ultrafast laser sources in combination with nonlinear crystals or waveguides. In some implementations fiber based mid-ir sources producing very short pulses and/or mid-ir sources based on a mode locked fiber lasers are utilized.
08/07/14
20140218928
Laser lighting device
The present invention discloses a laser lighting device, includes a laser device, used to emit lasers; a power supply, connecting to the laser device; a battery of lenses, locates at the same optical axis with the laser device; a regulating device, used to regulate exit angles of the lasers passing through the battery of lenses; a controlling device, connecting to the power supply and the laser device separately, used to receive and based on the users' control instructions to control the laser device emitting lasers at corresponding exit angles, and/or control the power supply outputting corresponding powers. The laser lighting device can regulate the laser exit angles through the regulating device, and receive and based on users' control instructions to control both laser brightnesses and laser exit angles.
08/07/14
20140218750
Wavelength scanning interferometer and method for aspheric surface measurement
The present invention discloses a wavelength scanning interferometer and a method for an aspheric surface measurement. The wavelength scanning interferometer comprises a set of tunable lasers (7) used as a light source, a twyman-green interferometer used for generating interference fringes, a translation platform (1) used for scanning an optical path difference along an optical axis, an image card (11) used for converting interference data to a digital signal and transmitting the digital signal to a computer (12), and a data card (13) used for synchronizing the actions of a ccd camera (9) and the translation platform (1).
08/07/14
20140217073
Marking apparatus with a plurality of lasers and individually adjustable sets of deflection means
The invention relates to a marking apparatus for marking an object with laser light, comprising a plurality of lasers and a control unit for individually activating each of the lasers to emit a laser beam (90) according to a sign to be marked. A set of deflection means (30) for rearranging the laser beams (90) into a desired array of laser beams (90) is provided, the set of deflection means (30) comprises at least two deflection means (33a-i, 34a-i) per laser beam (90), in particular at least two mapping mirrors (33a-i, 34a-i) or at least one optical waveguide and one lens per laser beam (90a-i), and each deflection means (33a-i, 34a-i) is individually adjustable in its deflection direction and/or individually shiftable..
08/07/14
20140217072
Marking apparatus with a plurality of lasers and a combining deflection device
The invention relates to a marking apparatus (100) for marking an object with laser light, comprising a plurality of lasers (10), in particular gas lasers (10), and a control unit for individually activating each of the lasers (10) to emit a laser beam according to a sign to be marked. A deflection device (30) is provided by which at least two laser beams are combined on a common spot..
07/31/14
20140212331
Near infrared microbial elimination laser systems (nimels)
Methods, systems, and apparatus for near infrared microbial elimination laser systems (nimels) including use with medical devices are disclosed. The medical devices can be situated in vivo.
07/31/14
20140211822
Vertical-cavity surface-emitting lasers
Vertical-cavity surface-emitting lasers (“vcsels”) and vcsel arrays are disclosed. In one aspect, a surface-emitting laser includes a grating layer having a sub-wavelength grating to form a resonant cavity with a reflective layer for a wavelength of light to be emitted from a light-emitting layer and an aperture layer disposed within the resonant cavity.
07/31/14
20140211466
Étendue shaping using faceted arrays
An apparatus for directing laser light has an illumination source having one or more lasers that are each energizable to emit laser light. A first faceted array in the path of the emitted laser light from the illumination source has at least a first light-redirecting facet and an adjacent second light-redirecting facet.
07/31/14
20140211461
Light source module using lasers as light source
A light source module includes a first triangular prism, a second triangular prism, a second laser source, and a third laser source. A first laser beam emitted from the first laser source and a second laser beam emitted from the second laser source are mixed to a first mixed laser beam by the first triangular prism.
07/31/14
20140211192
Driver circuit for leds for time-of-flight calculation
An electronic driver circuit for leds and lasers is provided for use in time-of-flight applications featuring a high efficiency of energy-conversion and a high precision of distance-measurements based on a dual conversion circuit. A voltage to voltage dc-dc conversion is hereby merged with a dc-voltage to pulsed-current booster, this booster operating at a time-of-flight modulation frequency.
07/31/14
20140209583
Managing thermal budget in annealing of substrates
A method and apparatus are provided for treating a substrate. The substrate is positioned on a support in a thermal treatment chamber.
07/24/14
20140206178
Method of laser separation of the epitaxial film or of the epitaxial film layer from the growth substrate of the epitaxial semiconductor structure (variations)
The present invention proposes variations of the laser separation method allowing separating homoepitaxial films from the substrates made from the same crystalline material as the epitaxial film this new method of laser separation is based on using the selective doping of the substrate and epitaxial film with fine donor and acceptor impurities. In selective doping, concentration of free carries in the epitaxial film and substrate may essentially differ and this can lead to strong difference between the light absorption factors in the infrared region near the residual beams region where free carriers and phonon-plasmon interaction of the optical phonons with free carriers make an essential contribution to infrared absorption of the optical phonons.
07/24/14
20140204573
Light source module using lasers as light source
A light source module includes a double refraction prism, an optical plate, a first laser source, a second laser source, and a third laser source. A first laser beam emitted from the first laser source and a second laser beam emitted from the second laser source are mixed by the double refraction prism and these are mixed together with a third laser beam emitted from the third laser source by the optical plate..
07/24/14
20140202994
Compact, coherent, high brightness light sources for the mid and far ir
Compact high brightness light sources for the mid and far ir spectral region, and exemplary applications are disclosed based on passively mode locked tm fiber comb lasers. In at least one embodiment the coherence of the comb sources is increased in a system utilizing an amplified single-frequency laser to pump the tm fiber comb laser.
07/17/14
20140200689
Quantum computer and quantum computing using ising model
For each pair of a plurality of slave lasers b for which injection synchronization is performed by a master laser m, by controlling the intensity of light exchanged between two slave lasers b and an optical path length between the two slave lasers b using a slave-to-laser intensity control unit ia and an inter-slave laser optical path length control unit ip, the magnitude and the sign of pseudo ising interaction jij between the two slave lasers b are implemented. After the plurality of slave lasers b arrive at a steady state, by measuring relative values of the oscillation phases of the plurality of slave lasers b with respect to the oscillation phase of the master laser m by using an oscillation phase measuring unit pm, pseudo ising spins σi of the plurality of slave lasers b are measured..
07/17/14
20140199913
Toy laser gun and laser target system
The present invention relates to a toy gun capable of transmitting a laser beam and/or an infrared (“ir”) beam of light for use in a game. The toy gun also has a detector for detecting a laser and ir signal.
07/17/14
20140199494
Highly reflective, hardened silica titania article and method of making
The present disclosure is directed to improved silica-titania glass articles intended for use in euv or other high energy reflective optic systems, and to a process for producing such improved silica-titania articles. The improved silica-titania glass articles provide a more stable surface for the coatings that are used in the making of reflective optical elements for euv applications.
07/17/14
20140198817
Lasers with ingaasp quantum wells and gaasp barrier layers
A laser can include an active region having: one or more quantum wells having ingaasp; and two or more quantum well barriers having gaasp bounding the one or more quantum wells, wherein the active region is devoid of al. The laser emits light having about 850 nm.
07/17/14
20140198378
Optical semiconductor device
An optical semiconductor device includes: semiconductor lasers; a wave coupling section multiplexing light output by the semiconductor lasers; first optical waveguides respectively optically connecting respective semiconductor lasers to the wave coupling section; a phase regulator regulating phase of reflected light that is reflected at a reflecting point located in the optical semiconductor device and that returns to the semiconductor lasers; a second optical waveguide optically connecting the wave coupling section to the phase regulator; an optical amplifying section amplifying output light of the phase regulator; and a third optical waveguide optically connecting an output of the phase regulator to the optical amplifying section. The phase regulator adjusts the phase of reflected light that returns to the semiconductor lasers to decrease line width of the light output by the semiconductor lasers..
07/10/14
20140193154
Subchannel security at the optical layer
The present invention includes various novel systems and methods for dynamically modifying wdm transmission and receive steps (individually or in combination), including encoding client signals, mapping them to subchannels within or across itu channels, modulating them onto subcarrier frequencies, and multiplexing them together for optical transmission. By dynamically modifying one or more of these processing steps over time (as well as encrypting underlying client signals), additional security is provided at the physical (optical) layer of an optical network, thereby greatly enhancing overall network security.
07/10/14
20140192417
Two-dimensional wavelength-beam-combining of lasers using first-order grating stack
A method and apparatus for two-dimensional wavelength beam combining of laser sources. In one example, an external cavity multi-wavelength laser includes an array of laser emitters each producing an optical beam having a specified wavelength, a grating stack comprising a plurality of first-order diffraction gratings arranged linearly in a first dimension, and a dispersive element.
07/10/14
20140192403
Multi-mode fiber amplifier
A laser utilizes a cavity design which allows the stable generation of high peak power pulses from mode-locked multi-mode fiber lasers, greatly extending the peak power limits of conventional mode-locked single-mode fiber lasers. Mode-locking may be induced by insertion of a saturable absorber into the cavity and by inserting one or more mode-filters to ensure the oscillation of the fundamental mode in the multi-mode fiber.
07/10/14
20140192384
Exposing device and image forming apparatus
Provided is an exposing device capable of enhancing usage efficiency of light and preventing degradation of imaging property due to a misalignment with a photosensitive drum. The exposing device includes: a laser array including multiple lasers arranged in a predetermined direction; and an optical system guiding light emitted from the each of the multiple lasers to a photosensitive member and focusing the light on the photosensitive member, in which the optical system includes multiple phase modulation elements to decrease a phase lag added in proportion to distance from a center axis that is defined by a principal light beam emitted from the each of the multiple lasers..
07/10/14
20140192341
Fixture planarity evaluation method
Methods for determining the planarity of two components of a semiconductor processing tool, such as a 3d wafer bonder are disclosed. The two components may be fixtures, chucks, or platens of the tool.
07/10/14
20140192025
Touchscreen displays incorporating dynamic transmitters
Systems and methods for implementing touchscreen displays that utilize a transmitter system to dynamically scan at least one light beam across a surface of interest such that substantially every point in a region above the surface of interest is dynamically scanned by a light beam from two directions, a receiver system to receive and detect the at least one dynamically scanned light beams, and a processor configured to determine locations of contact are provided. The systems and methods may utilize a transmitter system that includes dynamic transmitters, which may be in the form mems micromirrors used in conjunction with infrared semiconductor lasers..
07/03/14
20140188094
Focused near-infrared lasers for non-invasive varicose veins and other thermal coagulation or occlusion procedures
Focused infrared light may be used in a non-invasive varicose vein treatment procedure with infrared light from a plurality of laser diodes that are combined in a multiplexer and coupled to a multi-mode fiber coupled to another fiber or fiber bundle that delivers the light to a lens/mirror assembly for application in the non-invasive procedures. The wavelength of light may be selected near 980 nm, 1210 nm, or 1720 nm to achieve a desired penetration depth and/or for absorption in a particular tissue type or water.
07/03/14
20140188092
Focused near-infrared lasers for non-invasive vasectomy and other thermal coagulation or occlusion procedures
Focused infrared light at wavelengths selected to target tissue below the skin may be used in a non-invasive procedure for vasectomies, varicose veins, hemorrhoids, or fungal nail infections. Infrared light from various sources selected for a particular application may be focused so that the cone of light has lower intensity on the skin/outer tissue and higher intensity at a desired depth to cause thermal coagulation or occlusion of the target tissue beneath the skin.
07/03/14
20140187055
Short pulse fiber laser for ltps crystallization
Laser pulses from pulsed fiber lasers are directed to an amorphous silicon layer to produce a polysilicon layer comprising a disordered arrangement of crystalline regions by repeated melting and recrystallization. Laser pulse durations of about 0.5 to 5 ns at wavelength range between about 500 nm and 1000 nm, at repetition rates of 10 khz to 10 mhz can be used.
07/03/14
20140186032
Optical bench apparatus having integrated monitor photodetectors and method for monitoring optical power using same
Optical bench structure provides a platform for integrating optical transmitters, particularly vertical-cavity surface-emitting lasers (vcsels), with monitor photodetectors. A substrate with photodetectors on the front side is aligned with flip-chip bonding bumps so the emission of the transmitters is aligned with the monitor photodetectors and passes through the monitor photodetectors with a portion of the transmitted light absorbed by the monitor photodetectors.
07/03/14
20140185644
Spatially stable high brightness fiber
Optical fibers that provide stable output beam sizes have core refractive indices that decrease non-monotonically from a core center to a core/cladding interface. A maximum refractive index of the core is situated at a radius of between about ½ and ¾ of the core radius so that a core center has a depressed refractive index.
07/03/14
20140185643
Pulsed bias current for gain switched semiconductor lasers for amplified spontaneous emission reduction
Gain switched laser diode pulses are used as seed pulses for optical pulse generation. Ase is reduced by applying a prebias to the laser diodes at an amplitude less than that associated with a laser diode threshold.
07/03/14
20140185640
Enhanced optical gain and lasing in indirect gap semiconductor thin films and nanostructures
Structures and methodologies to obtain lasing in indirect gap semiconductors such as ge and si are provided and involves excitonic transitions in the active layer comprising of at least one indirect gap layer. Excitonic density is increased at a given injection current level by increasing their binding energy by the use of quantum wells, wires, and dots with and without strain.
07/03/14
20140185286
Apparatus for condensing light from multiple sources using bragg gratings
There is provided a colour sequential illumination device comprising in series: first and second light sources; a condenser lens; and a grating device. The grating device comprises at least one bragg grating.
07/03/14
20140185132
All fiber low dynamic pointing high power lma fiber amplifier
High power fiber lasers include large or very large mode area active fibers. Mode preserving pump combiners are situated to counter-pump the active fiber using one or more pump sources.
07/03/14
20140185016
Color-based stereoscopic projection system and method
A stereoscopic projection system and method of generating light that include two or three infrared lasers, two optical parametric oscillators, and six or seven second harmonic generators. Six colors of visible light are produced.
07/03/14
20140183362
Short-wave infrared super-continuum lasers for detecting counterfeit or illicit drugs and pharmaceutical process control
A system and method for using near-infrared or short-wave infrared (swir) light sources for identification of counterfeit drugs may perform spectroscopy using a super-continuum laser to provide detection in a non-contact and non-destructive manner at stand-off or remote distances with minimal sample preparation. Also, near-infrared or swir light may penetrate through plastic containers and packaging, permitting on-line inspection and rapid scanning.
07/03/14
20140183360
Long-distance polarization and phase-sensitive optical time-domain reflectometry based on random laser amplification
A long-distance polarization and phase-sensitive reflectometry based on random laser amplification for extending a sensing distance includes a long-distance polarization and phase-sensitive reflectometry of a distributed raman amplification based on optical fiber random lasers generated by unilateral pumps, a long-distance polarization and phase-sensitive reflectometry of a distributed raman amplification based on optical fiber random lasers generated by bilateral pumps, and a long-distance polarization and phase-sensitive reflectometry of a raman amplification based on a combination of optical fiber random lasers generated by unilateral pumps and a common raman pump source, which are applied in optical fiber perturbation sensing and have a capability of greatly improving a working distance of a sensing system and a high practicability.. .
06/26/14
20140177049
Low etendue illumination
An optical system and method that utilize multiple low-etendue lasers to illuminate multiple spots one or more spatial light modulators. Stereoscopic systems may be formed by using different wavelengths or different polarizations for each spot.
06/26/14
20140177038
Laser machining system having a machining laser beam that is adjustable in terms of its brilliance
Laser machining system (60) comprises a high-power laser (61) for generating a high-power pump laser beam (hp-mm), control signal laser (62) for generating a control signal laser beam (ss), an optical fibre (64) leading from the two lasers to a laser machining head (63). The optical fibre has an srs amplifier fibre (65) with an inner fibre core (65a) of higher brilliance and with an outer fibre core (65b) of lower brilliance surrounding the inner fibre core.
06/26/14
20140175306
Beating signal monitoring module, terahertz wave generation device and optical signal monitoring device including the beating signal monitoring module
The inventive concept relates to a beating signal monitoring module and a terahertz wave generation device and an optical signal monitoring device that including the beating signal monitoring module. The beating signal monitoring module includes a nonlinear unit generating an optical signal including a fwm light in response to a beating signal generated from a first light and a second light; a filter unit separating the fwm light from the optical signal and outputting the separated fwm light; and a monitoring unit monitoring the beating signal using the separated fwm light.
06/19/14
20140168755
Methods and apparatus pertaining to picosecond pulsed fiber based lasers
A pulsed fiber laser apparatus for outputting picosecond laser pulses can comprise a fiber delivered pulsed seed laser for providing picosecond optical seed pulses, and at least one optical fiber amplifier in optical communication with the fiber delivered pulsed seed laser. The optical fiber amplifier can comprise a gain optical fiber that receives and optically amplifies picosecond optical pulses by operating in a nonlinear regime wherein the picosecond optical pulses can be spectrally broadened by a factor of at least 8 during amplification thereof.
06/19/14
20140166899
Method and apparatus for enhanced pathogen mortality in ventilation systems using solid state means of generation of uvc
A novel method and apparatus is presented wherein an output of infra-red solid state laser or multiple of such lasers is quadrupled in frequency to obtain a laser output that emits energy in ultra violet c spectrum, and wherein this energy is then provided within an air duct as is normal in hvac systems so as it kill pathogens that are airborne and being carried through the conduit. Further such a method reduces production of ozone, detrimental to human health and produced in other means of generating uvc and provides ease of control of such energy so as to maintain the required energy at a steady level for prolonged period of time..
06/12/14
20140161459
Thermally shielded multi-channel transmitter optical subassembly and optical transceiver module including same
A thermally shielded multi-channel transmitter optical subassembly (tosa) may be used in a multi-channel optical transceiver. The multi-channel tosa generally includes an array of lasers optically coupled to an arrayed waveguide grating (awg) to combine multiple optical signals at different channel wavelengths.
06/12/14
20140161457
Thermally isolated multi-channel transmitter optical subassembly and optical transceiver module including same
A thermally isolated multi-channel transmitter optical subassembly (tosa) may be used in a multi-channel optical transceiver. The multi-channel tosa generally includes an array of lasers optically coupled to an arrayed waveguide grating (awg) to combine multiple optical signals at different channel wavelengths.
06/12/14
20140161455
Temperature controlled multi-channel transmitter optical subassembly and optical transceiver module including same
A temperature controlled multi-channel transmitter optical subassembly (tosa) may be used in a multi-channel optical transceiver. The multi-channel tosa generally includes an array of lasers optically coupled to an arrayed waveguide grating (awg) to combine multiple optical signals at different channel wavelengths.


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