公开(公告)号：US12119607B2

公开(公告)日：2024-10-15

申请号：US17418597

申请日：2019-12-26

申请人： Nippon Telegraph and Telephone Corporation

发明人： Yusuke Muranaka ,  Shinji Matsuo ,  Nobuhiro Nunoya ,  Toshikazu Hashimoto

IPC分类号： H01S3/083 ,  H01S3/063 ,  H01S3/137

CPC分类号： H01S3/137 ,  H01S3/063 ,  H01S3/083

摘要： A wavelength tunable laser includes a filter region having a wavelength selection function on light from a gain region, wherein the filter region is a Sagnac interferometer and includes two ring resonators. The ring resonator has two optical couplers, and first and second curved waveguides connecting the two optical couplers, each of the two optical couplers is configured to receive input of the light from the gain region through an input-output port, to couple light of a resonant peak to a bar port of the input-output port, and to couple light except light at a resonant peak wavelength to a cross port of the input-output port, and the first curved waveguide connects the bar ports of the input-output ports of the two optical couplers, and the second curved waveguide connects the cross ports of ports, of two optical couplers, that the first curved waveguide is connected to.

公开(公告)号：US20240305058A1

公开(公告)日：2024-09-12

申请号：US18663971

申请日：2024-05-14

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Dongjae SHIN ,  Hyunil BYUN ,  Changgyun SHIN

IPC分类号： H01S3/10 ,  G01S7/481 ,  H01S3/063 ,  H01S3/08031 ,  H01S3/082 ,  H01S3/083 ,  H01S3/106 ,  H01S5/00 ,  H01S5/02 ,  H01S5/06 ,  H01S5/065 ,  H01S5/10 ,  H01S5/14

CPC分类号： H01S3/10023 ,  H01S3/0637 ,  H01S5/0071 ,  H01S5/0612 ,  H01S5/0654 ,  H01S5/1071 ,  H01S5/142 ,  G01S7/4814 ,  G01S7/4817 ,  H01S3/08031 ,  H01S3/082 ,  H01S3/0826 ,  H01S3/083 ,  H01S3/106 ,  H01S5/021 ,  H01S5/0218

摘要： Provided is a tunable laser source including a plurality of optical waveguides, at least three optical resonators provided between the plurality of optical waveguides and optically coupled to the plurality of optical waveguides, the at least three optical resonators having different lengths, and at least one optical amplifier provided on at least one of the plurality of optical waveguides, wherein a ratio of a first length of a first optical resonator of the at least three optical resonators to a second length of a second optical resonator of the at least three optical resonators is not an integer.

公开(公告)号：US20230344190A1

公开(公告)日：2023-10-26

申请号：US18299459

申请日：2023-04-12

申请人： Coherent LaserSystems GmbH & Co. KG

发明人： Guenter Hollemann ,  Christian Hagemann ,  Hannes Winter

IPC分类号： H01S3/136 ,  H01S3/094 ,  H01S3/108 ,  H01S3/131 ,  H01S3/083 ,  H01S3/08

CPC分类号： H01S3/136 ,  H01S3/094 ,  H01S3/108 ,  H01S3/1312 ,  H01S3/083 ,  H01S3/08072 ,  H01S2302/00 ,  H01S3/0606

摘要： A method for intracavity frequency conversion includes end-pumping a solid-state gain medium in a laser resonator with a pump laser beam to generate an intracavity laser beam circulating in the laser resonator, and frequency-converting a portion of the intracavity laser beam in a nonlinear crystal, located in the laser resonator, to generate a frequency-converted laser beam. The method controls the output power and at least one output beam parameter of the frequency-converted laser beam by adjusting (a) the pump power and (b) a resonator loss imposed on the intracavity laser beam. Taking advantage of both the pump laser beam and the intracavity laser beam contributing to thermal lensing in the gain medium, this control scheme is capable of controlling the output power and the output beam parameter(s) independently of each other.

公开(公告)号：US20230238764A1

公开(公告)日：2023-07-27

申请号：US18099362

申请日：2023-01-20

申请人： Thomas James Kane ,  Kenji Numata ,  John Lawrence Nightingale

发明人： Thomas James Kane ,  Kenji Numata ,  John Lawrence Nightingale

IPC分类号： H01S3/083 ,  H01S3/06 ,  H01S3/10

CPC分类号： H01S3/083 ,  H01S3/0627 ,  H01S3/1003

摘要： A monolithic nonplanar ring oscillator (NPRO) laser with a large piezo-electric tuning range and high frequency slew rate, denoted as a μNPRO, is described. A tuning range of 3.5 GHz with 192 volts applied, corresponding to a tuning coefficient of 18.2 MHz/volt was experimentally demonstrated. This performance was achieved by making the solid-state gain element small, with a small distance between a piezo-electric element bonded to the solid-state gain element and a first lase plane in the solid-state gain element. The entire nonplanar ring lasing path within the solid-state gain element may lie within the half of the solid-state gain element closest to the bonded piezo-electric element. This large frequency modulation span and wide frequency modulation bandwidth, combined with unsurpassed coherence and high power, make this an attractive laser for frequency-modulated continuous-wave (FMCW) LIDAR.

公开(公告)号：US20230231356A1

公开(公告)日：2023-07-20

申请号：US18085455

申请日：2022-12-20

申请人： ROCKLEY PHOTONICS LIMITED

发明人： Sergio PINNA ,  Yi ZHANG ,  Richard GROTE

IPC分类号： H01S3/083 ,  H01S3/08022 ,  H01S3/082

CPC分类号： H01S3/083 ,  H01S3/08027 ,  H01S3/0823

摘要： There is provided a laser, and/or a reflector for a laser cavity comprising: a ring resonator structure; and a Fabry-Perot filter connected in cascade to the ring resonator structure by a coupling waveguide. The coupling waveguide is configured to propagate light having a frequency corresponding to any of the resonant frequencies of the ring resonator structure to the Fabry-Perot filter, and the Fabry-Perot filter is configured to select one or more frequencies and return light having a frequency matching any of the selected frequencies to the ring resonator structure via the coupling waveguide.

公开(公告)号：US11677207B2

公开(公告)日：2023-06-13

申请号：US17716086

申请日：2022-04-08

申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

发明人： Khurram Karim Qureshi

IPC分类号： H01S3/067 ,  H01S3/083

CPC分类号： H01S3/06791 ,  H01S3/0677 ,  H01S3/06704 ,  H01S3/083

摘要： A fiber optic ring laser, and non-transitory computer readable medium for using a fiber optic ring laser are disclosed. The disclosed fiber optic ring laser includes a semiconductor booster optical amplifier (BOA), as a gain medium; a Fiber Fabry Perot Tunable Filter (FFP-TF), as a wavelength selection element; an optical isolator (ISO) to insure unidirectional operation of the fiber optic ring laser; and a polarization controller (PC) for attaining an optimized polarization state in order to achieve a stable-generated output in terms of output power and wavelength, wherein the BOA, the FFP-TF, the ISO and the PC are coupled to form a ring configuration that implements a continuously tunable booster amplifier-based fiber ring laser.

公开(公告)号：US11658453B2

公开(公告)日：2023-05-23

申请号：US17103470

申请日：2020-11-24

申请人： Ronald LaComb ,  Kevin LaComb

发明人： Ronald LaComb ,  Kevin LaComb

IPC分类号： H01S3/083 ,  H01S3/06 ,  H01S3/067 ,  H01S3/0941 ,  H01S5/40 ,  H01S5/10 ,  H01S5/02255 ,  H01S5/042 ,  H01S5/22 ,  H01S5/12 ,  H01S5/20 ,  H01S5/42 ,  H01S5/185

CPC分类号： H01S3/083 ,  H01S3/0627 ,  H01S3/0675 ,  H01S3/0941 ,  H01S5/1075 ,  H01S5/4056 ,  H01S5/02255 ,  H01S5/04254 ,  H01S5/04256 ,  H01S5/12 ,  H01S5/185 ,  H01S5/204 ,  H01S5/2219 ,  H01S5/4075 ,  H01S5/42

摘要： The present disclosure relates to a three-dimensional cylindrical cavity-type laser system capable of supporting circumferential radial emission. A cylindrical ring waveguide provides optical confinement in the radial and axial dimensions thereby supporting a plurality of radial modes, one of a plurality of axial modes and a plurality of degenerate azimuthal modes. These modes constitute a set of traveling wave modes which propagate around the cylindrical ring waveguide possessing various degrees of optical confinement as quantified by their respective Q-factors. Index tailoring is used to tailor the radial refractive index profile and geometry of the waveguide to support radial modes possessing Q-factors capable of producing efficient radial emission, while gain tailoring is used to define a gain confining region which offsets modal gain factors of the modal constituency to favor a preferred set of modes supporting efficient radial emission out of the total modal constituency supported by the resonator. Under appropriate pump actuation the selected modes produce circumferential laser radiation with the output surface comprising of the entire outer perimeter of the cylindrical ring waveguide. The design is applicable toward both micro-resonators and resonators much larger than the optical wavelength, enabling high output powers and scalability. The circumferential radial laser emission can be concentrated by positioning the cylindrical ring laser inside a three-dimensional conical mirror thereby forming a laser ring of light propagating in the axial dimension away from the surface of the laser, which can be subsequently collimated for focused using conventional optics.

公开(公告)号：US20190245318A1

公开(公告)日：2019-08-08

申请号：US16252928

申请日：2019-01-21

申请人： Ronald LaComb ,  Kevin LaComb ,  Sallie Townsend

发明人： Ronald LaComb ,  Kevin LaComb ,  Sallie Townsend

IPC分类号： H01S3/081 ,  H01S3/083 ,  H01S3/067

CPC分类号： H01S3/0813 ,  H01S3/06791 ,  H01S3/083

摘要： The present disclosure relates to a ring-type laser system supporting circumferential radial emission. A cylindrical ring waveguide provides optical confinement in the radial and axial dimensions supporting a plurality of traveling wave modes with various degrees of confinement. The waveguide contains a gain media which is gain tailored to offset modal confinement factors of the modal constituency to favor radial emission. The selected modes radiate energy as they circulate the laser resonator with a 360 degree output coupler. The design is applicable toward both micro-resonators and resonators much larger than the optical wavelength, enabling high output powers and scalability. The circumferential radial laser emission can be concentrated by positioning the cylindrical ring laser inside a three-dimensional conical mirror thereby forming a laser ring of light propagating in the axial dimension away from the surface of the laser, which can be subsequently collimated for focused using conventional optics.

公开(公告)号：US20190103719A1

公开(公告)日：2019-04-04

申请号：US15720493

申请日：2017-09-29

申请人： HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

发明人： Geza Kurczveil ,  Raymond G. Beausoleil ,  Di Liang ,  Chong Zhang ,  David Kielpinski

IPC分类号： H01S3/00 ,  H01S5/06 ,  H01S3/10 ,  H01S5/10 ,  H01S5/12

CPC分类号： H01S3/0057 ,  G02B6/10 ,  H01S3/083 ,  H01S3/10007 ,  H01S3/1118 ,  H01S5/005 ,  H01S5/0085 ,  H01S5/021 ,  H01S5/0265 ,  H01S5/0601 ,  H01S5/0657 ,  H01S5/1092 ,  H01S5/1221 ,  H01S5/141

摘要： A laser includes a traveling wave laser cavity with an active section, a pulse stretcher, and a pulse compressor. The pulse stretcher is coupled to the waveguide before the active section and the pulse compressor is coupled to the waveguide after the active section.

公开(公告)号：US20180254603A1

公开(公告)日：2018-09-06

申请号：US14636058

申请日：2015-03-02

申请人： Pranalytica, Inc.

发明人： C. Kumar N. Patel ,  Arkadiy Lyakh

IPC分类号： H01S5/00 ,  H01S5/34

CPC分类号： H01S3/1068 ,  H01S3/083 ,  H01S5/0287 ,  H01S5/141 ,  H01S5/3401

摘要： A semiconductor laser tuned with an acousto-optic modulator. The acousto-optic modulator may generate standing waves or traveling waves. When traveling waves are used, a second acousto-optic modulator may be used in a reverse orientation to cancel out a chirp created in the first acousto-optic modulator. The acousto-optic modulator may be used with standing-wave laser resonators or ring lasers.