公开(公告)号：US12126134B2

公开(公告)日：2024-10-22

申请号：US17396268

申请日：2021-08-06

申请人： HUAWEI TECHNOLOGIES CANADA CO., LTD. ,  Université Laval

发明人： Lixian Wang ,  Charles Matte-Breton ,  Sophie La Rochelle ,  Frédéric Maes ,  Zhiping Jiang

IPC分类号： H01S3/30 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/17

CPC分类号： H01S3/09415 ,  H01S3/06716 ,  H01S3/0672 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094069 ,  H01S3/1608 ,  H01S3/1618 ,  H01S3/06729 ,  H01S3/06733 ,  H01S3/06766 ,  H01S3/176 ,  H01S2301/02

摘要： An optical fiber configured to improve the pump conversion efficiency of an L-band fiber amplifier which uses the multimode pump source. By directly absorbing multimode light including 915 nm, an active fiber core region co-doped with both erbium and ytterbium can provide gain to the L-band signals via stimulated emission. The unwanted C-band amplified spontaneous emission (ASE) light generate from this active fiber core region can be absorbed by another active fiber core region doped with erbium, then provides additional gain to the L-band signals. Active regions and cladding can be configured to match a given spatial mode of the optical signal. Signal-pump combiners with end-coupling or side coupling can be used.

公开(公告)号：US12068571B2

公开(公告)日：2024-08-20

申请号：US18135490

申请日：2023-04-17

申请人： CYNOSURE, LLC

发明人： Rafael Armando Sierra ,  Mirko Georgiev Mirkov

IPC分类号： H01S3/30 ,  H01S3/08 ,  H01S3/094 ,  H01S3/102 ,  H01S3/1106 ,  H01S3/1109 ,  H01S3/16 ,  A61B18/00 ,  H01S3/107 ,  H01S3/11

CPC分类号： H01S3/094076 ,  H01S3/08054 ,  H01S3/1024 ,  H01S3/1106 ,  H01S3/1109 ,  H01S3/1611 ,  H01S3/1673 ,  A61B2018/00458 ,  F04C2270/0421 ,  H01S3/094038 ,  H01S3/107 ,  H01S3/1075 ,  H01S3/1103 ,  H01S3/1618 ,  H01S3/1623 ,  H01S3/1643

摘要： Apparatuses and methods are disclosed for applying laser energy having desired pulse characteristics, including a sufficiently short duration and/or a sufficiently high energy for the photomechanical treatment of skin pigmentations and pigmented lesions, both naturally-occurring (e.g., birthmarks), as well as artificial (e.g., tattoos). The laser energy may be generated with an apparatus having a resonator with the capability of switching between a modelocked pulse operating mode and an amplification operating mode. The operating modes are carried out through the application of a time-dependent bias voltage, having waveforms as described herein, to an electro-optical device positioned along the optical axis of the resonator.

公开(公告)号：US12034269B2

公开(公告)日：2024-07-09

申请号：US17258408

申请日：2019-07-05

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： Takayuki Mizuno ,  Koki Shibahara ,  Akira Isoda ,  Takayuki Kobayashi ,  Yutaka Miyamoto

IPC分类号： H01S3/067 ,  H01S3/094 ,  H01S3/10 ,  H01S3/30 ,  H04B10/2581 ,  H04B10/291 ,  H04B10/293 ,  H04J14/04

CPC分类号： H01S3/30 ,  H01S3/06737 ,  H01S3/06779 ,  H01S3/094007 ,  H01S3/10015 ,  H04B10/2581 ,  H04B10/2916 ,  H04B10/293 ,  H04J14/04

摘要： An optical amplifier repeater system includes an optical fiber propagating a light beam in a plurality of propagation modes and an optical amplifier repeater amplifying the light beam propagated through the optical fiber. The optical amplifier repeater includes an optical demultiplexer demultiplexing the light beam in the plurality of propagation modes propagated through the optical fiber into a plurality of single-mode light beams, an optical amplifier amplifying, by simultaneous pumping, intensities of the plurality of single-mode light beams using a light beam generated by one pumping light source, an optical multiplexer multiplexing the plurality of single-mode light beams amplified by the optical amplifier into a light beam in the plurality of propagation modes, and an optical intensity adjusting unit adjusting the intensity of each of the plurality of single-mode light beams at least one of before or after the amplification by the optical amplifier. The optical intensity adjusting unit performs the adjustment by amplifying or attenuating the optical intensity of each of the plurality of single-mode light beams in an individual optical path through which the single-mode light beam is propagated.

公开(公告)号：US11933730B2

公开(公告)日：2024-03-19

申请号：US17616102

申请日：2019-06-06

申请人： Nippon Telegraph and Telephone Corporation

发明人： Shigeo Ishibashi

IPC分类号： G01J3/44 ,  G01N21/65 ,  G02B21/06 ,  H01S3/30

CPC分类号： G01N21/65 ,  G02B21/06 ,  H01S3/302

摘要： A light source employed in a coherent Raman scattering (CRS) spectroscopic apparatus or a CRS microscope includes a chromium forsterite laser (CrFL), a variable delay optical path configured to delay one optical pulse of branched optical pulses obtained by dividing an optical pulse from the CrFL according to a power, a highly nonlinear waveguide into which the other optical pulse of the branched optical pulses is input, a first wavelength filter connected to an output of the highly nonlinear waveguide, an ytterbium-doped glass fiber optical amplifier (YbFA) connected to an output of the wavelength filter, and a second wavelength filter connected to an output of the YbFA. The light source includes a one-optical path mode in which two wavelength bands corresponding to Raman scattering wavenumbers to be used for measurement are selected from an output of the variable delay optical path, and a two-optical path mode in which an output of the variable delay optical path and an output of the second wavelength filter are time-synchronized.

公开(公告)号：US20240055821A1

公开(公告)日：2024-02-15

申请号：US18258140

申请日：2021-12-17

申请人： CERN - EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH

发明人： Eduardo GRANADOS MATEO ,  Valentin N. FEDOSSEEV ,  Katerina CHRYSALIDIS ,  Richard P. MILDREN

IPC分类号： H01S3/08031 ,  H01S3/06 ,  H01S3/094 ,  H01S3/102 ,  H01S3/30

CPC分类号： H01S3/08031 ,  H01S3/0606 ,  H01S3/094038 ,  H01S3/1028 ,  H01S3/30 ,  H01S3/0627

摘要： A Raman laser conversion device for generating a single longitudinal mode, SLM, laser output is disclosed. The device comprises a Raman medium that exhibits a Stokes emission when subject to pumping by a laser pump input, the laser pump input having a pump linewidth and the Raman medium having a Raman linewidth; wherein the Raman medium is configured to define feedback interfaces of a resonator such that the Stokes emission resonates within the Raman medium; and further wherein the free spectral range, FSR, of the resonator with respect to the pump linewidth and/or the Raman linewidth or a function thereof is such that only one longitudinal mode of the Stokes emission is able to resonate within the Raman medium; whereby the laser conversion device generates a SLM laser output that is frequency shifted with respect to the laser pump input.

公开(公告)号：US11870203B2

公开(公告)日：2024-01-09

申请号：US16695090

申请日：2019-11-25

申请人： Nuburu, Inc.

发明人： Mark Zediker

IPC分类号： H01S3/067 ,  H01S3/094 ,  H01S3/30 ,  H01S3/23 ,  H01S3/0941

CPC分类号： H01S3/06708 ,  H01S3/0675 ,  H01S3/094046 ,  H01S3/094069 ,  H01S3/2391 ,  H01S3/302 ,  H01S3/09415 ,  H01S3/094003

摘要： Methods and system to provide high power and brightness display and illumination systems and methods. In embodiments multi-wavelength laser beams in the wavelength range of 300 nm to 700 nm, including high power beams in these wavelengths having excellent beam qualities are provided and used. The three wavelengths can be primary colors, red, green and blue. Manufacturing and display systems, allowing the high-power white light generation directly from a single fiber laser source, such as theaters, sporting events, public events, private and home entertainment to name a few. The systems are configured for Photopic and Scotopic vision.

公开(公告)号：US11824581B2

公开(公告)日：2023-11-21

申请号：US17399295

申请日：2021-08-11

申请人： Ciena Corporation

发明人： Choudhury A. Al Sayeed ,  Song Cao ,  Na Young Kim

IPC分类号： H04B10/29 ,  H04B10/03 ,  H04B10/25 ,  H01S3/067 ,  H01S3/23 ,  H01S3/30 ,  H04B10/291 ,  H04B10/071 ,  H04B10/07 ,  H04B10/293

CPC分类号： H04B10/03 ,  H01S3/06716 ,  H01S3/2316 ,  H01S3/30 ,  H04B10/25 ,  H04B10/07 ,  H04B10/071 ,  H04B10/29 ,  H04B10/2916 ,  H04B10/2935

摘要： Systems and methods are provided for creating a sequence of turn-up processes for amplifiers. A method, according to one implementation, includes determining when a fiber span is initially installed in an optical line system or when an Optical Line Failure (OLF) in the fiber span has recovered. The optical line system includes a first set of amplifiers deployed at an upstream node and a second set of amplifiers deployed at a downstream node, the upstream node connected to the downstream node via the fiber span. In response to determining that the fiber span is initially installed in the optical line system or that an ORL in the fiber span has recovered, the method also includes sending a flag from the upstream node to the downstream node to allow the first set of amplifiers to perform a first turn-up process before the second set of amplifiers perform a second turn-up process.

公开(公告)号：US11784452B2

公开(公告)日：2023-10-10

申请号：US17429218

申请日：2020-02-05

申请人： Cymer, LLC

发明人： Saptaparna Das ,  Eric Anders Mason ,  John Theodore Melchior

IPC分类号： H01S3/30 ,  H01S3/034 ,  H01S3/08 ,  H01S3/083 ,  H01S3/225 ,  H01S3/23 ,  H01S3/081 ,  H01S3/0971

CPC分类号： H01S3/0346 ,  H01S3/0835 ,  H01S3/08059 ,  H01S3/0811 ,  H01S3/0971 ,  H01S3/225 ,  H01S3/2308

摘要： An optical element for a deep-ultraviolet light source includes a crystalline substrate; a coating on an exterior surface of the crystalline substrate, the coating having a thickness along a direction that extends away from the exterior surface; and a structure on and/or in the coating, the structure including a plurality of features that extend away from the crystalline substrate along the direction. The features include an amorphous dielectric material and are arranged such that an index of refraction of the structure varies along the direction.

公开(公告)号：US20230283037A1

公开(公告)日：2023-09-07

申请号：US18169301

申请日：2023-02-15

申请人： APPLIED ENERGETICS, INC.

发明人： Stephen William McCahon ,  Alan Kost

IPC分类号： H01S3/1106 ,  H01S3/00 ,  H01S3/067 ,  H01S3/30

CPC分类号： H01S3/1106 ,  H01S3/0057 ,  H01S3/06725 ,  H01S3/30

摘要： A tunable, modulated high-frequency light beam from a single source of coherent light. An ultra-short pulse of coherent light, having an optical spectrum, is derived from a single source. Spreading the optical spectrum of the ultra-short pulse of coherent light forms a spectrally spread optical pulse which is thereafter split into two or more spectrally spread optical pulses. At least one of the two or more spectrally spread optical pulses is delayed, such that, upon recombining the two or more spectrally spread optical pulses a tunable, modulated spectrally spread optical pulse is formed.

公开(公告)号：US11728615B2

公开(公告)日：2023-08-15

申请号：US17578121

申请日：2022-01-18

申请人： Fraen Corporation

发明人： Carlton S. Jones ,  Renald Dore

IPC分类号： H01S3/30 ,  H01S5/00 ,  H01S3/067 ,  H01S3/08 ,  H01S5/183 ,  H01S5/024 ,  H01S5/02251 ,  H01S5/40

CPC分类号： H01S5/0087 ,  H01S3/067 ,  H01S3/08086 ,  H01S5/005 ,  H01S5/18397 ,  H01S5/02251 ,  H01S5/02415 ,  H01S5/4012

摘要： In one aspect, an optical system for delivering light into an optical fiber is disclosed, which comprises a phosphor-converted white light source for generating white light, a red light emitting diode (LED) for generating red light, and a light-delivery system for delivering at least a portion of said white light and said red light into an input port of an optical fiber.