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6341137 |
Wavelength division multiplexed array of long-wavelength vertical cavity lasers
A semiconductor device includes an array of long-wavelength VCSELs pumped by a short-wavelength optical pump. The array of long-wavelength VCSELs includes a series of semiconductor recesses, where...
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6327283 |
Wavelength switched laser source
A laser source in accordance with the invention includes a broadband laser generating optical output signals including a plurality of predetermined wavelength components. A bi-directional optical...
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6314116 |
Single resonator for simultaneous multiple single-frequency wavelengths
Disclosed is a laser system including a high reflector and an output coupler defining a resonator; a gain medium positioned in the resonator that produces optical gain at more than two desired...
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6304350 |
Temperature compensated multi-channel, wavelength-division-multiplexed passive optical network
Temperature compensation of a wavelength-division-multiplexed (WDM) passive optical network (PON) communication system uses power measurements from each of it remote nodes (RNs) to adjust the...
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6295306 |
Tunable semiconductor laser light source
A semiconductor laser light source tunable in wavelength comprising: a semiconductor laser which has one facet having an antireflection coating; a tunable bandpass filter for transmitting a light...
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6292504 |
Dual cavity laser resonator
Dual-cavity resonators that may be optimized for multiple functions (operating modes). The dual-cavity resonators provide a first set of operating modes that exhibits low repetition rates (5-20...
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6259121 |
Monolithic multiple wavelength VCSEL array
An array of n-wavelength vertical cavity surface emitting lasers (VCSELs) can be grown with precise and repeatable wavelength control. First, a foundation VCSEL structure is grown on a substrate....
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6256328 |
Multiwavelength modelocked semiconductor diode laser
Single-stripe GaAs/AlGaAs semiconductor optical amplifiers which simultaneously generates from four to more than twenty tunable WDM channels. A four channel version transmits approximately 12...
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6236666 |
Semiconductor laser with a superbroadband or multiline spectral output
A superbroadband or multiwavelength laser transmitter source for wavelength-division multiplexing, two-wavelength interferometry, differential lidar and optical storage applications. Contrary to...
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6215807 |
Coherent multiple beam laser system
A coherent multiple beam laser system including a plurality of slab lasers and a feedback device responsive to the output of at least one of the slab lasers, for feeding back a portion of the slab...
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6201824 |
Strongly complex coupled DFB laser series
A two-dimensional matrix of complex coupled (gain or loss coupled) semiconductor DFB lasers is disclosed. The matrix includes several parallel branches of series lasers, each series having a...
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6192058 |
Multiwavelength actively mode-locked external cavity semiconductor laser
A multiwavelength mode-locked (MWML) angled-stripe SOA laser that emits multiple discrete groups of wavelengths simultaneously in a short time interval, where each group is located at a wavelength...
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6178035 |
Optical device and method of manufacturing the same
An optical device includes a light transmitting non-linear optical material having a first face and a second face. The first and second faces oppose each other. The first face has a plurality of...
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6169562 |
Image exposure apparatus
An image exposure apparatus which can prevent occurrence of color displacement at a low cost is structured to comprise at least three kinds of light sources each of which emits a light of a...
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6167074 |
Monolithic independently addressable Red/IR side by side laser
A monolithic laser structure has an infrared laser structure side by side with a red laser structure. The infrared and red laser structures share the same substrate and have the same material for...
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6163552 |
Article comprising an optical fiber cascaded Raman resonator
A multi-wavelength Raman radiation source is disclosed. The source receives pump radiation at a given wavelength, e.g., 1100 nm, and has outputs at two or more longer wavelengths, e.g., 1450 nm and...
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6148012 |
Multiple wavelength quantum cascade light source
A multiple wavelength quantum cascade (QC) superlattice (SL) light source has at least three energy levels in each radiative transition (RT) region, and electron transitions between the levels give...
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6144681 |
Article comprising a dual-wavelength quantum cascade photon source
The quantum cascade (QC) photon source according to this invention can emit simultaneously at two distinct wavelengths, typically both in the mid-infrared. This is accomplished through provision of...
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6144025 |
Laser light source apparatus
The light emitted by a laser diode 1 is entered into a beam splitter 5, and its reflected light is given to an optical band pass filter 8. The light passing through the optical band pass filter 8...
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6141368 |
Method of controlling lasing wavelength(s)
A method is provided to control the lasing wavelength of a laser material without changing or adjusting the mechanical components of a laser device. The rate at which the laser material is pumped...
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6118562 |
Wavelength aligning apparatus using arrayed waveguide grating
A wavelength aligning apparatus using an arrayed waveguide grating (AWG), and particularly, to a wavelength aligning apparatus using an arrayed waveguide grating which is capable of aligning...
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6104739 |
Series of strongly complex coupled DFB lasers
A one dimensional series of complex coupled (gain or loss coupled) DFB semiconductor lasers is disclosed. Each laser comprises a multiple quantum well active region and a complex coupled grating...
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6088374 |
Multi-wavelength semiconductor laser array having phase-shift structures
A multi-wavelength distributed feedback (DFB) semiconductor laser array is herein disclosed which comprises a plurality of DFB semiconductor laser elements, wherein a grating periodicity is set...
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6088376 |
Vertical-cavity-surface-emitting semiconductor devices with fiber-coupled optical cavity
A semiconductor light-emitting device having an optical cavity with a fiber grating. A vertical-cavity-surface-emitting laser can be constructed to produce single-mode tunable laser oscillation and...
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6084900 |
Annular waveguide vertical cavity surface emitting laser array and method of fabrication
An array of annular waveguide VCSELs for achieving a stable single high order mode light source characterized as emitting a plurality of emission beams of varying wavelengths. The device array...
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6061369 |
Wavelength selectable fiber laser system
A fiber laser system including multiple fiber lasers fabricated to emit at respective different wavelengths when optically pumped by radiation at a pump wavelength. A pump laser emits the pump...
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6057871 |
Laser marking system and associated microlaser apparatus
A laser marking system and an associated microlaser apparatus are provided which include a submount, a plurality of pump sources operably mounted upon the submount, and a microlaser disposed in...
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6058130 |
Laser apparatus for generating different wavelength regions
A laser apparatus has a laser device, a first reflection mirror, an output mirror and a second reflection mirror. The laser device oscillates first and second laser light beams. The first...
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6055250 |
Multifrequency laser having reduced wave mixing
A multifrequency laser (MFL) eliminates nonlinearities produced in the "shared" waveguide of the MFL laser (the section in which all the lightwaves from all the lasers pass) by either making the...
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6047010 |
Second harmonic generator and laser applied units
A second harmonic generator comprising a semiconductor laser as an excitation light source and a resonator having a solid laser crystal excited by the excitation light source, a control element for...
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6047009 |
Wavelength conversion laser
In a wavelength conversion laser, a laser crystal is pumped by light and the wavelength of a solid state laser beam emitted from the laser crystal is converted by a nonlinear optical crystal having...
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6041071 |
Electro-optically tunable external cavity mirror for a narrow linewidth semiconductor laser
An external cavity mirror for use in a semiconductor laser, the external cavity mirror comprising a waveguide formed on a substrate of highly electro-optic material, and including...
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6038243 |
Multiple beam light source device and multiple beam scanning optical apparatus using the device
A multiple beam light source device includes a plurality of semiconductor laser chips. The plurality of semiconductor laser chips each have respective emission points independent from each other....
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6028876 |
High power semiconductor laser device and method for fabricating the same
The present invention relates to high power semiconductor laser device and method for fabricating the same utilizing ion implanting process, by which a beam steering phenomenon of an optical output...
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6026112 |
Delivery system for high power multi-wavelength laser systems
A laser beam delivery system that uses total internal reflection inside prisms to redirect the high powered broadband output laser power from a laser beam source to the intended target. An...
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6023480 |
Fast tunable multiwavelength laser with folded imaging arrangement of nonoverlapping focal regions
A compact multiwavelength laser arrangement includes a reflective waveguide grating combined with two arrays of reflecting waveguide elements located in separate focal regions formed by the...
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6018536 |
Multiple-wavelength mode-locked laser
A laser produces light having multiple wavelengths. The laser comprises a gain medium disposed within the laser resonance cavity, a dispersion element coupled to the gain medium and within the...
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6014401 |
Device for controlling a laser source with multiple laser units for the energy and spatial optimization of a laser surface treatment
A laser source has two or more laser units and coupling means for coupling the laser beams from each unit so as to deliver a resulting beam for treating a surface. Concurrently with the laser...
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6011809 |
Multi-wavelength laser apparatus and continuous variable wavelength laser apparatus
It is an object of the present invention to provide a multi-wavelength laser apparatus and a continuous variable wavelength laser apparatus capable of simultaneously outputting laser beams with a...
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5999553 |
Monolithic red/ir side by side laser fabricated from a stacked dual laser structure by ion implantation channel
A monolithic laser structure has an infrared laser structure stacked on top of a red laser structure. An ion implantation channel from the substrate of the infrared laser structure to the lower...
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5995524 |
Real-time dynamic chirp measurements of optical signal
A method of and apparatus for measuring chirp passes an input modulated optical signal through a Waveguide Grating Router (WGR) and processes the signals from adjacent WGR output ports in an...
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5995523 |
Single mode laser suitable for use in frequency multiplied applications and method
A single mode laser implementation and associated method are disclosed. The laser may accommodate a frequency multiplying material to provide an intracavity doubled single frequency laser. The...
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5991316 |
Laser light emitting device, laser beacon device and laser imager display device
A laser beam generating device which, by addition of a simplified structure, can enlarge the spectral width of the laser light and lower the coherence to a moderate value. The laser light...
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5987041 |
Laser apparatus and method for emission of laser beam using same
A laser apparatus capable of emitting a laser beam upon wavelength conversion and intensity modulation, which comprises a fundamental wave resonance means comprising a light emitting part, an...
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5982799 |
Multiple-wavelength laser diode array using quantum well band filling
A multiple-wavelength laser diode array is described. A wavelength span of several tens of nanometers is achieved through band-filling of a quantum well active region. A multiple-wavelength array...
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5982788 |
Semi-monolithic cavity for external resonant frequency doubling and method of performing the same
The fabrication of an optical cavity for use in a laser, in a frequency doubling external cavity, or any other type of nonlinear optical device, can be simplified by providing the nonlinear crystal...
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5978119 |
System and method for synchronizing an optical source and a router in a wavelength division multiplexed fiber optic network
A system and method for maintaining alignment between a source and router in a Wavelength Division Multiplexed (WDM) fiber optic network. In a preferred embodiment, a narrow band of the wavelengths...
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5970077 |
Apparatus for efficiently transforming a single frequency, linearly polarized laser beam into principally two orthogonally polarized beams having different frequencies
Electro-optical devices comprising a multifaceted anisotropic acousto-optical crystal for transforming a single-frequency beam comprising two individual linearly-orthogonally, polarized input beams...
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5966393 |
Hybrid light-emitting sources for efficient and cost effective white lighting and for full-color applications
Hybrid inorganic light emitting device/luminescent polymer light-emitting sources for efficient and cost effective white lighting and for full-color applications and their manufacture are...
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5963568 |
Multiple wavelength, surface emitting laser with broad bandwidth distributed Bragg reflectors
A multiple wavelength surface emitting laser has a first and second broad bandwidth distributed Bragg reflector (DBR) which reflect light at multiple wavelengths. The surface emitting laser...
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