ClassID:

216131

H01S5/3401 - CPC Classification

Classification description:

Semiconductor lasers; Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well lasers [SQW-lasers], multiple quantum well lasers [MQW-lasers] or graded index separate confinement heterostructure lasers [GRINSCH-lasers] having no PN junction, e.g. unipolar lasers, intersubband lasers, quantum cascade lasers

Sub-classes:
Recent Application in this class:
#1
20260135351
2026-05-14

A SEMICONDUCTOR LIGHT-EMITTING STRUCTURE AND A METHOD FOR MANUFACTURING THE SEMICONDUCTOR LIGHT-EMITTING STRUCTURE

#2
20250392101
2025-12-25

BANDWIDTH ENHANCEMENT OF QUANTUM DOT/WELL HYBRID III-V/SILICON MICRO-RING LASERS

#3
20250364788
2025-11-27

SEMICONDUCTOR LASER CHIP FOR GAS SENSOR

#4
20250350096
2025-11-13

DEVICES INCLUDING IIIxOz , AlyOz SUPERLATTICES

#5
20250219355
2025-07-03

EXTERNAL RESONANT LASER MODULE

#6
20250105589
2025-03-27

CONTINUOUS FREQUENCY-TUNING ARRAY LIGHT SOURCE

#7
20250087965
2025-03-13

SPECIALIZED MOBILE LIGHT DEVICE CONFIGURED WITH A GALLIUM AND NITROGEN CONTAINING LASER SOURCE

#8
20240429685
2024-12-26

Interband Cascade Lasers with Improved Voltage Efficiency

#9
20240374311
2024-11-14

COMPACT LASER SCALPEL AND METHOD FOR PREFERENTIAL ABLATION OF TUMOR TISSUE

#10
20240248030
2024-07-25

DEPTH-RESOLVED MID-INFRARED PHOTOTHERMAL IMAGING OF LIVING CELLS AND ORGANISMS WITH SUB-MICRON SPATIAL RESOLUTION

#11
20240235160
2024-07-11

VERTICAL-CAVITY SURFACE-EMITTING LASER (VCSEL) WITH CASCADED ACTIVE REGION

#12
20240204485
2024-06-20

QUANTUM CASCADE LASER ELEMENT

#13
20240146032
2024-05-02

QUANTUM CASCADE ELEMENT

#14
20240136795
2024-04-25

Vertical-cavity surface-emitting laser (VCSEL) with cascaded active region

#15
20240030678
2024-01-25

SEMICONDUCTOR LASER DEVICE

#16
20230408406
2023-12-21

Spectroscopy Device Incorporating a Mid-Infrared Laser

#17
20230387652
2023-11-30

Specialized mobile light device configured with a gallium and nitrogen containing laser source

#18
20230344189
2023-10-26

Multi-quantum-reference laser frequency stabilization

#19
20230291180
2023-09-14

QUANTUM CASCADE LASER ELEMENT AND QUANTUM CASCADE LASER DEVICE

#20
20230246422
2023-08-03

QUANTUM CASCADE LASER ELEMENT, QUANTUM CASCADE LASER DEVICE, AND METHOD FOR MANUFACTURING QUANTUM CASCADE LASER ELEMENT

#21
20230246418
2023-08-03

EXTERNAL RESONANCE TYPE LASER MODULE

#22
20230231364
2023-07-20

Weak Index Guiding of Interband Cascade Lasers

#23
20230194421
2023-06-22

Depth-resolved mid-infrared photothermal imaging of living cells and organisms with sub-micron spatial resolution

#24
20230148134
2023-05-11

QUANTUM-CASCADE LASER ELEMENT AND QUANTUM-CASCADE LASER DEVICE

#25
20230143711
2023-05-11

METHOD FOR PRODUCING QUANTUM CASCADE LASER ELEMENT

#26
20230142086
2023-05-11

QUANTUM CASCADE LASER ELEMENT AND QUANTUM CASCADE LASER DEVICE

#27
20230132974
2023-05-04

QUANTUM CASCADE LASER ELEMENT AND QUANTUM CASCADE LASER DEVICE

#28
20230131797
2023-04-27

Quantum cascade laser system with angled active region

#29
20230130363
2023-04-27

QUANTUM CASCADE LASER ELEMENT AND QUANTUM CASCADE LASER DEVICE

#30
20230095425
2023-03-30

QUANTUM CASCADE LASER DEVICE

#31
20230087419
2023-03-23

EXTERNAL RESONANT LASER MODULE

#32
20230036709
2023-02-02

Monolithically integrated mid-infrared two-dimensional optical phased array

#33
20230030197
2023-02-02

PHOTODETECTOR AND BEATING SPECTROSCOPY DEVICE

#34
20230027967
2023-01-26

Surface-emitting semiconductor light-emitting device

#35
20220349818
2022-11-03

Depth-resolved mid-infrared photothermal imaging of living cells and organisms with sub-micron spatial resolution

#36
20220311215
2022-09-29

QUANTUM CASCADE LASER

#37
20220271506
2022-08-25

External resonant laser module

#38
20220271505
2022-08-25

External resonant laser module

#39
20220271491
2022-08-25

EXTERNAL RESONANCE-TYPE LASER MODULE

#40
20220255298
2022-08-11

LASER SOURCE AND METHOD FOR FORMING THE SAME

#41
20220209505
2022-06-30

LASER MODULE

#42
20220181851
2022-06-09

Optical kit and optical device

#43
20220181850
2022-06-09

Method of making a distributed Bragg mirror

#44
20220143747
2022-05-12

Laser processing apparatus

#45
20220037858
2022-02-03

Monolithic quantum cascade laser (QCL)/avalanche photodiode (APD) infrared transceiver

#46
20210399526
2021-12-23

SURFACE-EMITTING QUANTUM CASCADE LASER

#47
20210378742
2021-12-09

Compact laser scalpel and method for preferential ablation of tumor tissue

#48
20210351570
2021-11-11

Quantum cascade laser device

#49
20210344167
2021-11-04

SYSTEM AND METHOD FOR OPTICAL FEEDBACK STABILIZED SEMICONDUCTOR FREQUENCY COMBS

#50
20210328411
2021-10-21

Dual quantum cascade laser micropackage

#51
20210313774
2021-10-07

Quantum cascade laser element

#52
20210305785
2021-09-30

Quantum cascade laser

#53
20210257806
2021-08-19

Acousto-optic tuning of lasers

#54
20210215602
2021-07-15

QCL Spectroscopy System and Applications Therefor

#55
20210194206
2021-06-24

Specialized mobile light device configured with a gallium and nitrogen containing laser source

#56
20210184432
2021-06-17

Vertical-cavity surface-emitting laser (VCSEL) with cascaded active region

#57
20210135432
2021-05-06

Quantum cascade laser

#58
20210135431
2021-05-06

QUANTUM CASCADE LASER

#59
20200412093
2020-12-31

Mid-IR external cavity quantum cascade laser with a wavelength-adjustable interference filter

#60
20200395736
2020-12-17

Quantum cascade laser system with angled active region

#61
20200350743
2020-11-05

Thermo-optically tunable laser system

#62
20200335947
2020-10-22

Widely-tunable harmonic frequency comb in a quantum cascade laser

#63
20200313397
2020-10-01

Quantum cascade laser with monolithically integrated passive waveguide

#64
20200287353
2020-09-10

Waveguide heterostructure for dispersion compensation in semiconductor laser

#65
20200274331
2020-08-27

Semiconductor laser wafer and semiconductor laser

#66
20200271520
2020-08-27

Spectrum measurement apparatus and spectrum measurement method

#67
20200259312
2020-08-13

Plasmonic laser

#68
20200244031
2020-07-30

Acousto-optic tuning of lasers

#69
20200220333
2020-07-09

Dual quantum cascade laser micropackage

#70
20200169064
2020-05-28

Pulsed quantum cascade device assembly with active voltage pulldown

#71
20200168762
2020-05-28

Gallium nitride cross-gap light emitters based on unipolar-doped tunneling structures

#72
20200067281
2020-02-27

INHOMOGENEOUS FOCUSING AND BROADBAND METASURFACE QUANTUM-CASCADE LASERS

#73
20190334320
2019-10-31

Quantum cascade laser

#74
20190326728
2019-10-24

Thermo-optically tunable laser system

#75
20190267773
2019-08-29

Quantum impedance matching for carrier injection in tunable transistor-injected quantum cascade lasers

#76
20190260181
2019-08-22

Method for making quantum cascade laser with angled active region

#77
20190252862
2019-08-15

Laser module and system

#78
20190237939
2019-08-01

Dual quantum cascade laser micropackage

#79
20190207360
2019-07-04

Acousto-optic tuning of lasers

#80
20190199064
2019-06-27

Substrate including photonic crystal and method for manufacturing the same, and surface emitting quantum cascade laser

#81
20190148915
2019-05-16

Surface-emitting quantum cascade laser

#82
20190131769
2019-05-02

Laser power adjustment during tuning to compensate for detector response and varying background absorption

#83
20190115728
2019-04-18

Quantum cascade laser

#84
20190081454
2019-03-14

Distributed feedback semiconductor laser

#85
20190052058
2019-02-14

External resonance type laser module, analysis apparatus, method of driving external resonance type laser module, and non-transitory computer readable medium

#86
20190011361
2019-01-10

Fluid analyzer

#87
20180375292
2018-12-27

Quantum cascade laser

#88
20180375283
2018-12-27

Laser apparatus and extreme ultraviolet light generating system

#89
20180372620
2018-12-27

Analyzer, absorption characteristic calculation circuit, and analysis method

#90
20180366912
2018-12-20

Quantum cascade laser, light emitting apparatus

#91
20180366910
2018-12-20

Quantum cascade laser, light emitting apparatus, method for fabricating quantum cascade laser

#92
20180337319
2018-11-22

Light emitting apparatus

#93
20180321144
2018-11-08

QCL spectroscopy system and applications therefor

#94
20180287347
2018-10-04

OPTICAL SEMICONDUCTOR DEVICE

#95
20180269652
2018-09-20

Plasmonic mode III-V laser as on-chip light source

#96
20180266946
2018-09-20

Quantum Cascade Laser (QCL) Based Gas Sensing System and Method

#97
20180264726
2018-09-20

ADDITIVE MANUFACTURING APPARATUS, PROCESSING DEVICE, AND ADDITIVE MANUFACTURING METHOD

#98
20180261980
2018-09-13

Semiconductor laser

#99
20180254603
2018-09-06

Acousto-optic tuning of lasers

#100
20180254596
2018-09-06

Terahertz laser, terahertz source and use of such a terahertz laser

#101
20180254592
2018-09-06

Laser core having conductive mass electrical connection

#102
20180183207
2018-06-28

Vernier effect DBR lasers incorporating integrated tuning elements

#103
20180166859
2018-06-14

Quantum cascade semiconductor laser

#104
20180166858
2018-06-14

QUANTUM CASCADE LASER

#105
20180138661
2018-05-17

Light source and method for controlling the same

#106
20180088041
2018-03-29

Depth-resolved mid-infrared photothermal imaging of living cells and organisms with sub-micron spatial resolution

#107
20180062350
2018-03-01

Movable diffraction grating, method of manufacturing the same, and external resonator type laser module

#108
20180059012
2018-03-01

GAS MEASURING APPARATUS

#109
20180048124
2018-02-15

Integrated quantum cascade laser, semiconductor optical apparatus

#110
20180048118
2018-02-15

Quantum cascade laser with angled active region and related methods

#111
20180038561
2018-02-08

Light source assembly with multiple, disparate light sources

#112
20180006434
2018-01-04

Quantum cascade laser

#113
20170373473
2017-12-28

Quantum cascade laser with current blocking layers

#114
20170373472
2017-12-28

Weakly index-guided interband cascade lasers with no grown top cladding layer or a thin top cladding layer

#115
20170373465
2017-12-28

Laser source assembly with thermal control and mechanically stable mounting

#116
20170353009
2017-12-07

Quantum cascade laser integrated device

#117
20170317470
2017-11-02

Thermo-optically tunable laser system

#118
20170315573
2017-11-02

Low-noise current source including one or more current generator modules

#119
20170302054
2017-10-19

Monolithically integrated infrared transceiver

#120
20170244222
2017-08-24

Quantum cascade laser

#121
20170222403
2017-08-03

Laser module and system

#122
20170214217
2017-07-27

Surface-emitting ring-cavity quantum cascade laser with ring-shaped phase shifter and related methods

#123
20170201072
2017-07-13

Nitride semiconductor device and quantum cascade laser using the same

#124
20170201071
2017-07-13

Quantum cascade laser

#125
20170194765
2017-07-06

Monolithical widely tunable quantum cascade laser devices

#126
20170170633
2017-06-15

Method for producing quantum cascade laser and quantum cascade laser

#127
20170170629
2017-06-15

Laser module with meniscus collimating lens

#128
20170141542
2017-05-18

Quantum cascade laser

#129
20170125979
2017-05-04

Interband cascade light emitting devices

#130
20170115213
2017-04-27

Fluid analyzer and method of manufacturing fluid analyzer

#131
20170104311
2017-04-13

Thermal-mechanical adjustment for laser system

#132
20170077667
2017-03-16

Quantum cascade external cavity laser with metasurfaces

#133
20170070032
2017-03-09

Waveguide structure for mid-IR multiwavelength concatenated distributed-feedback laser with an active core made of cascaded stages

#134
20170070024
2017-03-09

Laser apparatus, EUV light generation system, and method of controlling laser apparatus

#135
20170063044
2017-03-02

Quantum cascade laser

#136
20170040769
2017-02-09

Quantum cascade laser array

#137
20170025818
2017-01-26

Rapidly tunable laser assembly

#138
20170012408
2017-01-12

Quantum cascade laser

#139
20170003170
2017-01-05

Light source with controllable linear polarization

#140
20160377534
2016-12-29

Gas measuring apparatus

#141
20160352072
2016-12-01

MONOLITHIC TUNABLE TERAHERTZ RADIATION SOURCE USING NONLINEAR FREQUENCY MIXING IN QUANTUM CASCADE LASERS

#142
20160336720
2016-11-17

Microelectromechanical system for tuning lasers

#143
20160322788
2016-11-03

Long wavelength quantum cascade lasers based on high strain composition

#144
20160322785
2016-11-03

Angled facet broad-ridge quantum cascade laser

#145
20160308331
2016-10-20

Terahertz quantum cascade laser implementing a {hacek over (C)}erenkov difference-frequency generation scheme

#146
20160294159
2016-10-06

Quantum cascade semiconductor laser

#147
20160268772
2016-09-15

Monolithic wide wavelength tunable mid-IR laser sources

#148
20160231239
2016-08-11

Quantum cascade laser (QCL) based gas sensing system and method

#149
20160209325
2016-07-21

QCL spectroscopy system and applications therefor

#150
20160161400
2016-06-09

Spectroscopy system using waveguide and employing a laser medium as its own emissions detector

#151
20160156153
2016-06-02

Generating terahertz frequency combs from quantum cascade lasers using nonlinear frequency mixing

#152
20160141835
2016-05-19

Laser and integrated graphene modulator

#153
20160111853
2016-04-21

Laser source assembly with thermal control and mechanically stable mounting

#154
20160087395
2016-03-24

Monolithically integrated absolute frequency comb laser system

#155
20160082662
2016-03-24

Device and a method for 3D printing and manufacturing of materials using quantum cascade lasers

#156
20160049770
2016-02-18

Single-mode, distributed feedback interband cascade lasers

#157
20160013619
2016-01-14

Semiconductor interband lasers and method of forming

#158
20150357793
2015-12-10

Method for manufacturing semiconductor device and the semiconductor device

#159
20150318668
2015-11-05

Quantum cascade laser and method for manufacturing quantum cascade laser

#160
20150292947
2015-10-15

QCL spectroscopy system and applications therefor

#161
20150280396
2015-10-01

High-power laser diode isolation and thermal management

#162
20150270685
2015-09-24

Monolithic wide wavelength tunable mid-IR laser sources

#163
20150244144
2015-08-27

Tunable semiconductor lasers

#164
20150207298
2015-07-23

Method for producing semiconductor optical device

#165
20150162724
2015-06-11

Substrate-emitting transverse magnetic polarized laser employing a metal/semiconductor distributed feedback grating for symmetric-mode operation

#166
20150160126
2015-06-11

Use of one or more retro-reflectors in a gas analyzer system

#167
20150131689
2015-05-14

Quantum cascade lasers with improved performance using interface roughness scattering

#168
20150117484
2015-04-30

Quantum cascade laser

#169
20150110137
2015-04-23

Single-mode quantum cascade lasers with enhanced tuning range

#170
20150109768
2015-04-23

Light source assembly with multiple, disparate light sources

#171
20150109680
2015-04-23

Laser module and system

#172
20150103857
2015-04-16

Tapered waveguide high-power quantum cascade lasers

#173
20150103851
2015-04-16

Thermo-optically tunable laser system

#174
20150078411
2015-03-19

Tunable laser, a method for making, and a method for operating such a laser

#175
20150070756
2015-03-12

Laser source with a large spectral range

#176
20150042820
2015-02-12

SENSOR SYSTEM FOR DETECTING FUGITIVE GAS

#177
20150014543
2015-01-15

Heterodyne detection system and method

#178
20140376585
2014-12-25

Infrared laser

#179
20140369367
2014-12-18

Structure for electron-beam pumped edge-emitting device and methods for producing same

#180
20140355637
2014-12-04

Quantum cascade laser

#181
20140348196
2014-11-27

SEMICONDUCTOR OPTICAL DEVICE ASSEMBLY

#182
20140314110
2014-10-23

Laser source assembly with thermal control and mechanically stable mounting

#183
20140291609
2014-10-02

Junctionless semiconductor light emitting devices

#184
20140251964
2014-09-11

Laser assembly with package beam pointing registration

#185
20140247850
2014-09-04

Multiquantum well structures for suppression of electron leakage and reduction of threshold-current density in quantum cascade lasers

#186
20140241392
2014-08-28

Quantum cascade laser

#187
20140226686
2014-08-14

Chemical detection and laser wavelength stabilization employing spectroscopic absorption via laser compliance voltage sensing

#188
20140199798
2014-07-17

Quantum cascade laser manufacturing method

#189
20140153603
2014-06-05

Quantum cascade laser element

#190
20140097360
2014-04-10

High output, mid infrared laser source assembly

#191
20140050241
2014-02-20

Semiconductor device and method for producing light and laser emission

#192
20130329761
2013-12-12

Quantum cascade semiconductor laser

#193
20130322480
2013-12-05

Quantum cascade laser

#194
20130322479
2013-12-05

Quantum cascade laser

#195
20130315272
2013-11-28

Regenerative amplifier, laser apparatus, and extreme ultraviolet light generation system

#196
20130221152
2013-08-29

Multi-wavelength high output laser source assembly with precision output beam

#197
20130195131
2013-08-01

Chemical detection and laser wavelength stabilization employing spectroscopic absorption via laser compliance voltage sensing

#198
20130195130
2013-08-01

Methods for determining optical power, for power-normalizing laser measurements, and for stabilizing power of lasers via compliance voltage sensing

#199
20130121362
2013-05-16

Infrared laser

#200
20130121361
2013-05-16

Interband cascade laser amplifier medium

#201
20130121353
2013-05-16

Infrared laser

#202
20130114628
2013-05-09

MULTI-WAVELENGTH DBR LASER

#203
20130017638
2013-01-17

Process for manufacturing buried hetero-structure laser diodes

#204
20130003770
2013-01-03

Interband cascade lasers

#205
20120309123
2012-12-06

Method for manufacturing quantum cascade laser

#206
20120296589
2012-11-22

Waveguide, apparatus including the waveguide, and method of manufacturing the waveguide

#207
20120294321
2012-11-22

Thermo-optically tunable laser system

#208
20120269221
2012-10-25

Interband cascade lasers with engineered carrier densities

#209
20120268743
2012-10-25

Laser characterization system and process

#210
20120229889
2012-09-13

Regenerative amplifier, laser apparatus, and extreme ultraviolet light generation system

#211
20120219022
2012-08-30

Wavelength-tunable light source

#212
20120217475
2012-08-30

Optoelectronic Devices Including Compound Valence-Band Quantum Well Structures

#213
20120128018
2012-05-24

Interband cascade lasers

#214
20120127564
2012-05-24

High-temperature interband cascade lasers

#215
20120120972
2012-05-17

Quantum cascade lasers with electrically tunable emission wavelengths

#216
20120106160
2012-05-03

Thermal pointer

#217
20120076160
2012-03-29

Continuous wavelength tunable laser source with optimum orientation of grating and gain medium

#218
20120068001
2012-03-22

Multi-wavelength high output laser source assembly with precision output beam

#219
20120044964
2012-02-23

Semiconductor interband lasers and method of forming

#220
20120033220
2012-02-09

QCL spectroscopy system and applications therefor

#221
20120012762
2012-01-19

LASER DEVICE, LASER SYSTEM, AND EXTREME ULTRAVIOLET LIGHT GENERATION APPARATUS

#222
20110310915
2011-12-22

Methods and apparatus for single-mode selection in quantum cascade lasers

#223
20110233409
2011-09-29

QUANTUM CASCADE LASER THAT GENERATES WIDELY VIEWABLE MID-INFRARED LIGHT

#224
20110216794
2011-09-08

Pseudo-CW Quantum Cascade Laser System

#225
20110173870
2011-07-21

SECURITY DEVICE WITH COMPACT MID-IR LASER

#226
20110158270
2011-06-30

Tunable Quantum Cascade Lasers And Photoacoustic Detection Of Trace Gases, TNT, TATP and Precursors Acetone And Hydrogen Peroxide

#227
20110103416
2011-05-05

Tunable Quantum Cascade Lasers and Photoacoustic Detection of Trace Gases, TNT, TATP and Precursors Acetone and Hydrogen Peroxide

#228
20110103414
2011-05-05

Compact mid-IR laser

#229
20110103412
2011-05-05

Tunable Quantum Cascade Lasers and Photoacoustic Detection of Trace Gases, TNT, TATP and Precursors Acetone and Hydrogen Peroxide

#230
20110103411
2011-05-05

Tunable Quantum Cascade Lasers and Photoacoustic Detection of Trace Gases, TNT, TATP and Precursors Acetone and Hydrogen Peroxide

#231
20110102788
2011-05-05

Tunable Quantum Cascade Lasers and Photoacoustic Detection of Trace Gases, TNT, TATP and Precursors Acetone and Hydrogen Peroxide

#232
20110080931
2011-04-07

CIRCULAR SEMICONDUCTOR LASERS HAVING LATTICES FOR VERTICAL EMISSION

#233
20110080311
2011-04-07

HIGH OUTPUT LASER SOURCE ASSEMBLY WITH PRECISION OUTPUT BEAM

#234
20110006229
2011-01-13

Lenses, optical sources, and their couplings

#235
20100329293
2010-12-30

Methods and Apparatus for Efficient, Low-noise, Precision Current Control

#236
20100243891
2010-09-30

COMPACT MID-IR LASER

#237
20100220755
2010-09-02

SPECTRALLY TUNABLER LASER MODULE

#238
20100132581
2010-06-03

COMPACT MID-IR LASER

#239
20100111122
2010-05-06

High output, mid infrared laser source assembly

#240
20100097690
2010-04-22

High-temperature interband cascade lasers

#241
20100046568
2010-02-25

Quantum cascade laser amplifier with an anti-reflection coating including a layer of yttrium fluoride

#242
20090268277
2009-10-29

Lenses, optical sources, and their couplings

#243
20090262768
2009-10-22

Compact Mid-IR laser

#244
20090225802
2009-09-10

Extended tuning in external cavity quantum cascade lasers

#245
20090218563
2009-09-03

NOVEL FABRICATION OF SEMICONDUCTOR QUANTUM WELL HETEROSTRUCTURE DEVICES

#246
20090028197
2009-01-29

FIXED WAVELENGTH MID INFRARED LASER SOURCE WITH AN EXTERNAL CAVITY

#247
20080304531
2008-12-11

Integrated broadband quantum cascade laser

#248
20080298406
2008-12-04

Compact external cavity mid-IR optical lasers

#249
20080159341
2008-07-03

Tunable quantum cascade lasers and photoacoustic detection of trace gases, TNT, TATP and precursors acetone and hydrogen peroxide

#250
20080144677
2008-06-19

Broadly tunable single-mode quantum cascade laser sources and sensors

#251
20080075133
2008-03-27

Extended tuning in external cavity quantum cascade lasers

#252
20070291804
2007-12-20

Compact mid-IR laser

#253
20070058686
2007-03-15

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