公开(公告)号：US20230069658A1

公开(公告)日：2023-03-02

申请号：US17463225

申请日：2021-08-31

申请人： Raytheon Company

发明人： Gerald P. Uyeno ,  Sean D. Keller ,  Benn H. Gleason

IPC分类号： G02B27/00 ,  G01J9/00 ,  G02B26/08 ,  G02B19/00 ,  G02B26/10 ,  G02B5/10 ,  H01S3/139 ,  H01S3/083 ,  H01S3/081 ,  H01S3/08

摘要： An amplified laser device is provided with one or more Micro-Electro-Mechanical System (MEMS) Micro-Mirror Arrays (MMAs) having tip, tilt and piston capability positioned on either side of the optical amplifier to correct the profile of the beam to improve the gain performance of the optical amplifier or to compensate for atmospheric distortion while steering the amplified beam over a FOR. The MEMS MMAs may be positioned in front of, behind or on both sides of the amplifier. The MEMS MMAs can be configured to optimize the combined amplifier performance, static and time varying, and compensation for atmospheric distortion together or separately.

公开(公告)号：US11482828B2

公开(公告)日：2022-10-25

申请号：US16911399

申请日：2020-06-25

申请人： Thomas James Kane ,  John Lawrence Nightingale

发明人： Thomas James Kane ,  John Lawrence Nightingale

IPC分类号： H01S3/113 ,  H01S3/08 ,  H01S3/131 ,  H01S3/11 ,  H01S3/04 ,  H01S3/0941 ,  H01S3/139 ,  H01S3/16 ,  H01S3/06

摘要： A passively, Q-switched laser operating at an eye safe wavelength of between 1.2 and 1.4 microns is described. The laser may operate at a lasing wavelength of 1.34 microns and use a gain element of Nd:YVO4 and a saturable absorber element of V:YAG. The position of the resonator axial mode spectrum relative to a gain peak of the gain element is controlled to yield desired characteristics in the laser output.

公开(公告)号：US20220131332A1

公开(公告)日：2022-04-28

申请号：US17519647

申请日：2021-11-05

申请人： TeraDiode, Inc.

发明人： Parviz TAYEBATI ,  Bien CHANN

IPC分类号： H01S3/082 ,  H01S5/40 ,  G02B27/10 ,  H01S3/08 ,  H01S5/14 ,  H01S3/139 ,  H01S3/23

摘要： A system and method for stabilizing and combining multiple emitted beams into a single system using both WBC and WDM techniques.

公开(公告)号：US11189983B2

公开(公告)日：2021-11-30

申请号：US16562597

申请日：2019-09-06

申请人： TERADIODE, INC.

发明人： Parviz Tayebati ,  Bien Chann

IPC分类号： H01S3/08 ,  H01S3/082 ,  H01S5/40 ,  G02B27/10 ,  H01S5/14 ,  H01S3/139 ,  H01S3/23

摘要： In accordance with various embodiments, a multi-wavelength beam output is formed by stabilizing beams each to a unique wavelength with a stabilizing dispersive element, which reflects a portion of the beam back to its emitter to stabilize the beam and transmits the stabilized beam. The stabilized beams are then transmitted to a combining dispersive element that combines the stabilized beams into the multi-wavelength beam output.

公开(公告)号：US11183812B2

公开(公告)日：2021-11-23

申请号：US16834889

申请日：2020-03-30

申请人： Thorlabs, Inc. ,  Praevium Research, Inc.

发明人： Alex Ezra Cable ,  Vijaysekhar Jayaraman ,  Benjamin Michael Potsaid

IPC分类号： H01S3/10 ,  H01S5/0683 ,  H01S5/183 ,  H01S5/06 ,  H01S5/04 ,  H01S5/10 ,  H01S3/105 ,  H01S5/34 ,  H01S5/00 ,  H01S3/139 ,  H01S5/028 ,  H01S5/042 ,  H01S5/343 ,  H01S5/0687

摘要： A tunable source includes a short-cavity laser optimized for performance and reliability in SSOCT imaging systems, spectroscopic detection systems, and other types of detection and sensing systems. The short cavity laser has a large free spectral range cavity, fast tuning response and single transverse, longitudinal and polarization mode operation, and includes embodiments for fast and wide tuning, and optimized spectral shaping. Disclosed are both electrical and optical pumping in a MEMS-VCSEL geometry with mirror and gain regions optimized for wide tuning, high output power, and a variety of preferred wavelength ranges; and a semiconductor optical amplifier, combined with the short-cavity laser to produce high-power, spectrally shaped operation. Several preferred imaging and detection systems make use of this tunable source for optimized operation are also disclosed.

公开(公告)号：US20210288462A1

公开(公告)日：2021-09-16

申请号：US17327251

申请日：2021-05-21

申请人： Picomole Inc.

发明人： Chris PURVES ,  Jean-François BISSON ,  Gisia BEYDAGHYAN

IPC分类号： H01S3/137 ,  H01S3/139 ,  H01S3/13

摘要： A system for producing single-frequency or near-single-frequency operation of a laser beam includes a laser for emitting a laser beam at each one of a plurality of cavity lengths, A detector is configured to receive at least a portion of the laser beam emitted, and generate a signal. A computer system is configured to identify at least one beat note in the signal for each of at least one of the plurality of cavity lengths, the at least one beat note indicating the presence of one or more higher-order transverse modes, longitudinal modes, or both, in the received at least the portion of the laser beam emitted at the at least one of the plurality of cavity lengths. The cavity is adjusted to one of the plurality of cavity lengths for eliminating or minimizing the at least one beat note.

公开(公告)号：US20210075182A1

公开(公告)日：2021-03-11

申请号：US16475747

申请日：2017-12-22

申请人： Macquarie University

发明人： David James Spence ,  Ondrej Kitzler ,  Jipeng Lin ,  Richard Paul Mildren ,  Helen M. Pask ,  Graeme P. A. Malcolm ,  Nils Hempler ,  Stephen Webster

IPC分类号： H01S3/08 ,  H01S3/081 ,  H01S3/139 ,  H01S3/083

摘要： A single longitudinal mode ring Raman laser including: a pump source outputting a pump light power, resonantly coupled to a first ring resonator; a optical measurement and piezo-actuator for stabilising the resonant coupling of the pump light power to a first ring resonator; a first ring resonator including a Raman gain medium, wherein the Raman gain medium receives the pump light power and undergoes Raman lasing generating resonated Stokes power at the corresponding Stokes output wavelength; the first ring resonator acting as a feedback loop for the pump light power and the resonated Stokes power and outputting a portion of the Stokes power as the laser output.

公开(公告)号：US10826265B2

公开(公告)日：2020-11-03

申请号：US16572636

申请日：2019-09-17

申请人： KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

发明人： Jungwon Kim ,  Dohyeon Kwon

IPC分类号： H01S3/137 ,  H04J14/02 ,  H01S3/067 ,  H01S3/10 ,  H01S3/139

摘要： A frequency stabilizer includes: a delay line interferometer that receives an optical signal corresponding to one frequency mode of a pulsed laser, divides and transmits the received optical signal to a reference arm and a delay arm including an optical fiber delay line, and then outputs an interference signal between signals passing through the reference arm and the delay arm; a photoelectric converter that converts the interference signal into an electrical signal; a mixer that generates a baseband signal of the electrical signal by mixing a carrier frequency signal; and a feedback controller that transmits a control signal generated based on the baseband signal to the pulsed laser. The optical signal passing through the delay arm is weighted with a delay time caused by the optical fiber delay line compared to the optical signal passing through the reference arm, and the optical signal passing through the delay arm is frequency shifted to a carrier frequency of an oscillator. A carrier-envelope offset frequency of the pulsed laser is stabilized by an offset frequency stabilizer.

公开(公告)号：US10666012B2

公开(公告)日：2020-05-26

申请号：US15920212

申请日：2018-03-13

申请人： Picomole Inc.

发明人： Chris Purves ,  Jean-François Bisson ,  Gisia Beydaghyan

IPC分类号： H01S3/139 ,  H01S3/08 ,  H01S3/137 ,  H01S3/13 ,  H01S3/223

摘要： A method and system for obtaining single-frequency operation of a laser system. A laser beam is emitted from a laser cavity, having an adjustable length, at a plurality of cavity lengths. At least a portion of the laser beam is received at a detector, which detects the presence of transverse and/or longitudinal modes in the laser beam, and generates a laser beam signal having a beat-note indicative thereof. The laser beam signal for each of the plurality of cavity lengths can be analyzed, and a cavity length of best mode purity, indicating single-frequency operation, can be selected. The laser beam system can emit a laser and have a laser beam splitter for directing at least a portion of the emitted laser beam to a laser beam detector for generating at least one laser beam signal therefrom, and an actuator for adjusting the length of the laser cavity.

公开(公告)号：US10476225B2

公开(公告)日：2019-11-12

申请号：US15739182

申请日：2016-07-06

申请人： COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES

发明人： Denis Penninckx ,  Jacques Luce ,  Romain Diaz ,  Odile Bonville ,  Roger Courchinoux

IPC分类号： H01S3/08 ,  H01S3/131 ,  H01S3/10 ,  H01S3/13 ,  H01S3/16 ,  H01S5/0687 ,  H01S3/094 ,  H01S3/139 ,  H01S5/024 ,  H01S5/068 ,  H01S3/0941 ,  H01S3/11

摘要： Disclosed is an injected laser including an optical amplifying medium arranged inside a triggered laser cavity, the optical amplifying medium having a spectral amplifying band. The injected laser includes an optical phase-modulation device, arranged between the injection source and the laser cavity, the optical phase-modulation device being configured to periodically modulate as a function of time a phase of the monochromatic continuous laser radiation at a modulation frequency equal to a natural integer multiple of the free spectral range of the laser cavity, so that the phase-modulated injection source generates a polychromatic injection radiation.