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公开(公告)号：US12117607B2
公开(公告)日：2024-10-15
申请号：US17242861
申请日：2021-04-28
Applicant: Raytheon Company
Inventor： Benn H. Gleason , Gerald P. Uyeno , Sean D. Keller
CPC classification number: G02B26/0833 , G01S7/4811 , G01S17/89 , H01S3/0071 , H01S3/08059
Abstract: A steerable laser transmitter and active situational awareness sensor that achieves SWaP-C, steering rate and spectral diversity improvements by scanning a beam with a Micro-Electro-Mechanical System (MEMS) Micro-Minor Array (MMA). One or more sections of non-linear material (NLM) positioned in the optical path (e.g. as annular sections around a conic mirror or as reflective optical coatings on the MMA) are used to convert the wavelength of the beam to a different wavelength while preserving the steering of the beam. The MEMS MMA may include piston actuation of the mirrors to shape the spot-beam.
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公开(公告)号：US20240235145A9
公开(公告)日：2024-07-11
申请号：US18489083
申请日：2023-10-18
Applicant: Chongqing Huapu Intelligent Equipment Co., Ltd. , Chongqing Huapu Scientific Instrument Co.,Ltd. , Yunnan Huapu quantum Material Co., Ltd , ROI Optoelectronics Technology CO, LTD. , GuangDong ROI Optoelectronics Technology Co., Ltd. , Chongqing Institute of East China Normal University , East China Normal University
Inventor： Heping ZENG , Zhengru GUO , Xiaowei QIAN , Tingting LIU , Tianjun YAO
CPC classification number: H01S3/1024 , H01S3/0602 , H01S3/08054 , H01S3/08059 , H01S3/0816
Abstract: A divided-pulse laser regeneration amplification apparatus includes: a signal light coupling component including a first half-wave plate, a first polarization beam splitter, a first Faraday rotator and a second half-wave plate placed in sequence; and a divided-pulse laser regeneration amplification component including a second polarization beam splitter and a third reflector, the second polarization beam splitter is adjacent to the second half-wave plate and is in a same column as the third reflector and the second half-wave plate; a first quarter-wave plate, a Pockels cell and a first reflector are successively arranged on a first side of the second polarization beam splitter, and a third half-wave plate, a first pulse polarization separation component and a first non-linear pulse amplification component are successively arranged on a second side of the second polarization beam splitter.
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公开(公告)号：US11996671B2
公开(公告)日：2024-05-28
申请号：US17301050
申请日：2021-03-23
Applicant: Université de Moncton
Inventor： Jean-François Bisson
IPC: H01S3/08 , H01S3/08031 , H01S3/0941 , H01S3/16
CPC classification number: H01S3/08059 , H01S3/08031 , H01S3/08054 , H01S3/09415 , H01S3/1618 , H01S3/1643
Abstract: A resonant cavity and a method for manufacturing the same are provided. The resonant cavity includes a first reflective surface and a second reflective surface, each of the first and second reflective surfaces providing a phase shift of a reflected electric field component of light waves oscillating along a first principal axis that differs by about π relative to a phase shift of a reflected electric field component of light waves oscillating along a second principal axis that is normal to the first principal axis. At least one of the first and second reflective surfaces having diattenuation. The first principal axis of the first reflective surface is set rotated relative to the first principal axis of the second reflective surface by about an angle α0 between an unbroken parity-time symmetric region and a broken parity-time symmetric region. As a result, spatial hole burning and dual mode operation can be eliminated.
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公开(公告)号：US20240136784A1
公开(公告)日：2024-04-25
申请号：US18489083
申请日：2023-10-17
Applicant: Chongqing Huapu Intelligent Equipment Co., Ltd. , Chongqing Huapu Scientific Instrument Co.,Ltd. , Yunnan Huapu quantum Material Co., Ltd , ROI Optoelectronics Technology CO, LTD. , GuangDong ROI Optoelectronics Technology Co., Ltd. , Chongqing Institute of East China Normal University , East China Normal University
Inventor： Heping ZENG , Zhengru GUO , Xiaowei QIAN , Tingting LIU , Tianjun YAO
CPC classification number: H01S3/1024 , H01S3/0602 , H01S3/08054 , H01S3/08059 , H01S3/0816
Abstract: A divided-pulse laser regeneration amplification apparatus includes: a signal light coupling component including a first half-wave plate, a first polarization beam splitter, a first Faraday rotator and a second half-wave plate placed in sequence; and a divided-pulse laser regeneration amplification component including a second polarization beam splitter and a third reflector, the second polarization beam splitter is adjacent to the second half-wave plate and is in a same column as the third reflector and the second half-wave plate; a first quarter-wave plate, a Pockels cell and a first reflector are successively arranged on a first side of the second polarization beam splitter, and a third half-wave plate, a first pulse polarization separation component and a first non-linear pulse amplification component are successively arranged on a second side of the second polarization beam splitter.
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公开(公告)号：US20230378714A1
公开(公告)日：2023-11-23
申请号：US18257689
申请日：2021-12-20
Inventor： Daniel J Ryan , Ryan R Ahern
CPC classification number: H01S3/2232 , H01S3/115 , H01S3/08059 , H01S3/105
Abstract: A CO2 laser configured to produce infrared electromagnetic radiation comprising an optical element comprising a frequency selective structure having a substantially periodic pattern of features. A frequency response of the optical element is configured to change upon receipt of a signal. A Q-factor of the CO2 laser changes upon receipt of the signal. A laser marking system may incorporate the CO2 laser.
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Patent Agency Ranking
公开(公告)号：US20230275393A1
公开(公告)日：2023-08-31
申请号：US18310204
申请日：2023-05-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Ce Liu , Zefeng Lu , Mingqiang Wang , Yanding Liu
CPC classification number: H01S3/101 , H01S3/086 , H01S3/106 , G02B26/105 , H01S3/08059 , H01S3/10069 , H02J50/30
Abstract: A laser emitting apparatus includes a detection and control system, a pump source, a first reflecting mirror group, a gain medium, and a beam deflection system on an optical path. The gain medium is pumped by the pump source to emit fluorescence, and is stimulated by resonance, between the first reflecting mirror group and a laser receiving apparatus, of the fluorescence to emit laser light. The beam deflection system emits the fluorescence or the laser light emitted by the gain medium, and emits the fluorescence or the laser light reflected by the laser receiving apparatus into the gain medium. The detection and control system adjusts the beam deflection system to preset emission angles, detects light intensities of the fluorescence or the laser light, and a light spot position of the laser light on the detection and control system, and adjusts the emission angle based on the light spot position.
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公开(公告)号：US20230238762A1
公开(公告)日：2023-07-27
申请号：US17935676
申请日：2022-09-27
Inventor： Steve Lecomte , Christoph Hofer , Erwin Portuondo-Campa
CPC classification number: H01S3/042 , H01S3/08059 , H01S3/094084 , H01S3/1685 , H01S3/1643
Abstract: A laser amplifier device including an amplification element which includes a solid-state gain medium including a first main face and a second main face separated from each other by a distance which is smaller than the lateral dimensions. A heat spreader is thermally connected to, and substantially covering, the first main face. The heat spreader is optically transparent to a pump light and is in thermal contact with a heat sink. A first reflector substantially covers and faces the first main face and a second reflector substantially covers and faces the second main face; the reflectors being configured to reflect the pump light. The heat spreader and the first reflector are arranged such that the pump light passes through the heat spreader and through the first reflector and is reflected multiple times across the amplification element, between the first and second reflectors.
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公开(公告)号：US20230216266A1
公开(公告)日：2023-07-06
申请号：US17566327
申请日：2021-12-30
Applicant: David M. Pepper
Inventor： David M. Pepper
CPC classification number: H01S3/10076 , H01S3/08059 , H01S3/2325
Abstract: A spatially and spectrally distributed long-laser system. Spatially separated phase-conjugate mirrors (PCMs) define a long-laser resonator cavity. The PCMs define, respectively, a power transmitting unit (master), and a power receiving unit (slave), as well as providing a secure two-way communications link between the units. The long-laser is mode-locked, minimizing third-party interception and detection. A wavefront-reversal device, using a MEMS spatial phase modulator, integrated with a retroreflector array, provides a true phase-conjugate (time-reversed) replica of the beam at each end of the system, providing auto-alignment, diffraction-limited performance, compensation for static and dynamic phase and polarization distortions, minimizing the FOV and scattering. The retroreflecting array initiates the oscillation mode. The SPM adaptive optical system bootstraps the retro-array by forming a simultaneous closed-loop system. The PCM emulates a deformable mirror with an integrated cat's eye retro-array, on a pixel-by-pixel basis, equivalent to a true wave-front reversal device at each end of the system.
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公开(公告)号：US20190252851A1
公开(公告)日：2019-08-15
申请号：US16393547
申请日：2019-04-24
Applicant: NICHIA CORPORATION
Inventor： Shingo TANISAKA
CPC classification number: H01S5/02252 , G02B19/0052 , H01L21/67075 , H01S3/08059 , H01S5/0071 , H01S5/0201 , H01S5/0203 , H01S5/0206 , H01S5/02212 , H01S5/02296 , H01S5/2081 , H01S5/2201
Abstract: A semiconductor laser device includes a mounting board, a semiconductor laser element provided on the mounting board, and an optical member. The optical member is made of silicon having a first {110} plane, a first {100} plane that is adjacent to the first {110} plane, a second {110} plane, and a second {100} plane that is adjacent to the second {110} plane, with the second {100} plane being fixed on the mounting board, and the first {110} plane being covered by a reflective film to reflect laser light emitted from the semiconductor laser element.
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公开(公告)号：US09991667B2
公开(公告)日：2018-06-05
申请号：US15481390
申请日：2017-04-06
Applicant: Shanghai Jiao Tong University
Inventor： Guoqiang Xie , Liejia Qian , Zhen Qiao , Lingchen Kong , Zhipeng Qin , Peng Yuan
CPC classification number: H01S3/1115 , H01S3/0014 , H01S3/005 , H01S3/0057 , H01S3/08004 , H01S3/08059 , H01S3/0811 , H01S3/0815 , H01S3/0817 , H01S3/094 , H01S3/09415 , H01S3/1022 , H01S3/1118 , H01S3/1616 , H01S3/163 , H01S3/1631 , H01S2301/20
Abstract: A method for generating femtosecond vortex beams with high spatial intensity contrast, where a noncollinearly pumped HG beam femtosecond laser generates femtosecond HG beam and a cylindrical lens mode converter converts the femtosecond HG beam to femtosecond LG vortex beam. The HG beam femtosecond laser comprises a pump source, a gain medium, a saturable absorption mirror as mode-locker, and an output coupler with a noncollinear angle between the laser beam and the pump beam in the gain medium, which enables the laser to generate pure, order-tunable femtosecond HG beams. Femtosecond vortex beams obtained after the cylindrical lens converter have high-intensity-contrast, and are topological charge-tunable.
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