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1. 发明申请

US20230124281A1 APPARATUS AND METHOD FOR ADJUSTING THE WAVELENGTH OF LIGHT 有权
公开(公告)号：US20230124281A1
公开(公告)日：2023-04-20
申请号：US17911774
申请日：2021-03-18
申请人： IMPERIAL COLLEGE INNOVATIONS LIMITED
发明人： Timothy RUNCORN
IPC分类号： H01S3/30 , H01S3/0941 , H01S3/10 , H01S3/16 , H01S3/00
摘要： An optical arrangement for adjusting the wavelength of light, comprising: a first light source arranged to generate a first beam of light at a first wavelength; a second light source arranged to generate seed light at a second wavelength; a first Raman shifting medium arranged to receive the light from the first light source in combination with the seed light from the second light source, and to produce, by stimulated Raman scattering, output light at the second wavelength and having temporal properties determined by those of the first beam of light; a third light source arranged to generate seed light at a third wavelength; and a second Raman shifting medium arranged to receive the output light from the first Raman shifting medium in combination with the seed light from the third light source, and to produce, by stimulated Raman scattering, output light at the third wavelength and having temporal properties determined by those of the output light from the first Raman shifting medium; wherein the third wavelength is greater than the second wavelength, and the second wavelength is greater than the first wavelength; wherein the frequency difference between the first beam of light and the seed light from the second light source is a frequency difference where the first Raman shifting medium exhibits Raman gain; and wherein the frequency difference between the output light from the first Raman shifting medium and the seed light from the third light source is a frequency difference where the second Raman shifting medium exhibits Raman gain. Also provided is a corresponding method of adjusting the wavelength of light.

2. 发明授权

US11563303B2 Optical pulse emitter 有权
公开(公告)号：US11563303B2
公开(公告)日：2023-01-24
申请号：US16569956
申请日：2019-09-13
申请人： STMicroelectronics (Grenoble 2) SAS , STMicroelectronics (Research & Development) Limited
发明人： Nicolas Moeneclaey , Shatabda Saha
IPC分类号： H01S3/10 , H01S5/042 , H01S5/183 , H01S5/026 , G01S7/484 , G01S7/4863 , G01S17/10 , G01S7/4865 , H05B45/10 , G01S17/894 , H05B45/32 , H05B45/397
摘要： Disclosed herein is a method of optical pulse emission including three phases. During a first phase, a capacitor is charged from a supply voltage node. During a second phase, a voltage stored on the capacitor is boosted, and then the capacitor is at least partially discharged through a light emitting device. During a third phase, the capacitor is further discharged by bypassing the light emitting device. The third phase may begin prior to an end of the second phase.

3. 发明授权

US11561453B2 Truncated non-linear interferometer-based sensor system 有权
公开(公告)号：US11561453B2
公开(公告)日：2023-01-24
申请号：US17472269
申请日：2021-09-10
申请人： UT-Battelle, LLC
发明人： Raphael C. Pooser , Benjamin J. Lawrie , Petro Maksymovych
IPC分类号： G01B9/02 , G02F1/35 , G01Q60/38 , B82Y35/00 , G01N21/45 , G01Q60/24 , G01Q20/02 , G02F1/29 , G01B9/02055 , H01S3/10 , G01B9/02003
摘要： A truncated non-linear interferometer-based sensor system includes an input that receives an optical beam and a non-linear amplifier that generates a probe beam and a conjugate beam from the optical beam. The system's local oscillators are related to the probe beam and the conjugate beam. The system includes a sensor that transduces an input with the probe beam and the conjugate beam. The transduction detects changes in the phase of each of the probe beam and the conjugate beam. The system's phase sensitive detectors detect phase modulations between the respective local oscillators, the probe beam, and the conjugate beam and outputs phase signals based on detected phase modulations. The system measures phase signals indicative of the sensor's input resulting from a sum or difference of the phase signals. The measurement exhibits a quantum noise reduction in an intensity difference, a phase sum, or an amplitude difference quadrature.

4. 发明授权

US11539181B2 System and method for determining absolute carrier-envelope phase of ultrashort laser pulses 有权
公开(公告)号：US11539181B2
公开(公告)日：2022-12-27
申请号：US17072237
申请日：2020-10-16
申请人： Wayne State University
发明人： Wen Li , Suk Kyoung Lee , Duke Debrah , Gabriel Stewart
IPC分类号： H01S3/11 , G01J11/00 , H01S3/10 , H01S3/00 , H01S3/067
摘要： A system for determining an absolute carrier-envelope phase (CEP) of ultrashort laser pulses includes a laser system for generating a laser beam including ultrashort optical pulses of a duration of less than 10 fs, an ultrabroadband quarter-wave plate configured to polarize the laser beam, and a gas jet emitting a continuous jet stream into the laser beam. The system includes focusing optics to adjust a focal spot of the laser beam to the gas jet, and a detector arrangement including a beam block and a microchannel plate (MCP) imaging detector, wherein the laser beam is directed to the detector arrangement. The method involves using angular streaking to determine the absolute CEP of both elliptically and linearly polarized light.

5. 发明授权

US11538786B2 Transfer printing method and transfer printing apparatus 有权
公开(公告)号：US11538786B2
公开(公告)日：2022-12-27
申请号：US16649801
申请日：2019-03-19
申请人： ORDOS YUANSHENG OPTOELECTRONICS CO., LTD. , BOE TECHNOLOGY GROUP CO., LTD.
发明人： Xinglong Luan , Jing Feng , Fuqiang Li , Zhichong Wang , Peng Liu , Wusheng Li , Chunjing Liu
IPC分类号： H01L23/00 , H01L21/67 , H01L21/68 , H01L33/00 , H01S3/10 , G02B26/08 , H01L25/075
摘要： A transfer printing method and a transfer printing apparatus. The transfer method includes: transferring a plurality of devices formed on an original substrate to a transfer substrate; obtaining first position information of positions of the plurality of devices on the transfer substrate; obtaining second position information of corresponding positions, on a target substrate, of devices to be transferred; comparing the first position information with the second position information to obtain first target position information recording a first transfer position; and aligning the transfer substrate with the target substrate and performing a site-designated laser irradiation on at least part of devices on the transfer substrate corresponding to the first transfer position, simultaneously, according to the first target position information, so as to transfer the at least part of the devices from the transfer substrate to the target substrate.

6. 发明申请

US20220376461A1 DEVICE, LASER SYSTEM AND METHOD FOR COMBINING COHERENT LASER BEAMS 有权
公开(公告)号：US20220376461A1
公开(公告)日：2022-11-24
申请号：US17874315
申请日：2022-07-27
申请人： TRUMPF Laser GmbH
发明人： Daniel Flamm , Andreas Heimes , Maike Prossotowicz
IPC分类号： H01S3/23 , H01S3/13 , H01S3/10 , G02B27/10 , G02B3/00
摘要： An apparatus for combining a plurality of coherent laser beams includes a splitting device for splitting an input laser beam into the plurality of coherent laser beams, a plurality of phase setting devices for adjusting a respective phase of one of the coherent laser beams, and a beam combining device for combining the coherent laser beams, which emanate from a plurality of grid positions of a grid arrangement, to form at least one combined laser beam. The beam combining device has a microlens arrangement with exactly one microlens array for forming the at least one combined laser beam.

7. 发明申请

US20220329035A1 FIBER AMPLIFIER 有权
公开(公告)号：US20220329035A1
公开(公告)日：2022-10-13
申请号：US17851307
申请日：2022-06-28
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Lin Zhang , Yaping Liu , Zhiqun Yang , Qiang Guo , RUI ZHOU
IPC分类号： H01S3/067 , H01S3/094 , H01S3/10 , H01S3/16
摘要： A fiber amplifier is provided, including a pump laser (202), a pump and signal combiner (203), and a few-mode doped fiber (204). The pump laser (202) is configured to output pump light. The pump and signal combiner (203) is configured to couple input few-mode signal light and the pump light into the few-mode doped fiber (204). Refractive indexes of a fiber core of the few-mode doped fiber (204) are distributed to be gradient along a radial direction of a cross section, the fiber core is etched with periodic gratings along an axial direction, and periods of the gratings satisfy a phase matching condition. The fiber amplifier achieves strong coupling and co-amplification between optical signal modes, thereby reducing a differential gain between mode groups.

8. 发明授权

US11469569B1 Methods of laser pulse development and maintenance in a compact laser resonator 有权
公开(公告)号：US11469569B1
公开(公告)日：2022-10-11
申请号：US17107940
申请日：2020-11-30
申请人： Arete Associates
发明人： Micah Boyd
IPC分类号： H01S3/115 , H01S3/13 , H01S3/136 , H01S3/127 , H01S3/10 , H01S3/083 , G02F1/03 , H01S3/0941
摘要： Described herein are methods for developing and maintaining pulses that are produced from compact resonant cavities using one or more Q-switches and maintaining the output parameters of these pulses created during repetitive pulsed operation. The deterministic control of the evolution of a Q-switched laser pulse is complicated due to dynamic laser cavity feedback effects and unpredictable environmental inputs. Laser pulse shape control in a compact laser cavity (e.g., length/speed of light

9. 发明授权

US11462881B2 Method and device for altering repetition rate in a mode-locked laser 有权
公开(公告)号：US11462881B2
公开(公告)日：2022-10-04
申请号：US15997883
申请日：2018-06-05
申请人： Vescent Photonics LLC
发明人： Juan Pino , Eng Hiang Mark Yeo , Kurt Richard Vogel
IPC分类号： H01S3/11 , H01S3/105 , H01S3/094 , H01S3/10 , H01S3/106 , H01S3/067 , G02B27/30
摘要： A mode locking device is disclosed for altering repetition rate in a mode-locked laser. In an example device, laser light is coupled from a fiber into a cavity through a sliding pigtail collimator with a diameter selected such that it is a close tolerance fit with a female snout on a package. A lens focuses laser light to an appropriate spot size onto a SAM or SESAM, such that back-reflection into the fiber is maximized. A piezoelectric transducer is mounted in cooperation with the SAM or SESAM for cavity tuning.

10. 发明授权

US11462880B2 Distributed pulsed light amplifier based on optical fiber parameter amplification, and amplification and performance characterization method 有权
公开(公告)号：US11462880B2
公开(公告)日：2022-10-04
申请号：US17583285
申请日：2022-01-25
申请人： Wuhan University of Technology
发明人： Zhengying Li , Xuelei Fu , Ben Xiong , Zhou Zheng
IPC分类号： H01S3/10 , G01M11/00 , G02F1/39 , H01S3/094 , H01S3/30
摘要： The present invention discloses a distributed pulsed light amplifier based on optical fiber parametric amplification, comprising a pump pulsed light source, a sensing pulsed light source, a synchronization device, a two-in-one optical coupler, an optical circulator, a parametric amplification optical fiber, a first optical filter, a photoelectric detector and a signal acquisition device. According to the distributed pulsed light amplifier, high-power pulsed light is used as pump light to generate an optical fiber parametric amplification effect near a zero-dispersion wavelength of an optical fiber, thereby amplifying a power of another sensing pulsed light. Meanwhile, due to the fact that effective optical fiber parametric amplification cannot be achieved through low-power light leakage outside a duration interval of the pump pulsed light, leaked light from the sensing pulsed light cannot be amplified, and the effect of amplifying a pulse extinction ratio can be achieved at the same time.

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