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61. 发明授权

US11022440B2 Cladding-pumped waveguide optical gyroscope 有权
公开(公告)号：US11022440B2
公开(公告)日：2021-06-01
申请号：US16562561
申请日：2019-09-06
申请人： LGS Innovations LLC
发明人： Inuk Kang
IPC分类号： G01C19/72 , G02F1/35 , H01S3/067 , H01S3/094 , H01S3/063 , H01S3/083 , H01S3/02 , H01S3/10 , H01S3/0941
摘要： A waveguide optical gyroscope (WOG) is disclosed, which may include: an emitter; an integrated interferometer disposed on a silica planar lightwave circuit (PLC) and comprising a multilayer waveguide loop disposed in a first cladding material and interposed between layers of at least a second cladding material having an index of refraction lower than an index of refraction of the first cladding material; a pump source configured to pump the first cladding material with a signal that compensates for a propagation loss in the multilayer waveguide loop; and a micro-optic component configured to receive an output of the emitter and to guide the output into the integrated interferometer.

62. 发明授权

US11005227B2 Multi-wavelength adjustable-radial-mode fiber laser 有权
公开(公告)号：US11005227B2
公开(公告)日：2021-05-11
申请号：US16562365
申请日：2019-09-05
申请人： Nufern
发明人： Peyman Ahmadi , Peter Andrew Rosenthal
IPC分类号： H01S3/067 , B23K26/06 , H01S3/10 , H01S3/109 , H01S3/23
摘要： A high-power fiber laser produces a compound output beam having a center beam and an annular beam. The center beam and the annular beam are independently adjustable in power and wavelength. The output beam is delivered from an output optical fiber having a center core and a concentric annular core. A fundamental beam generated by a seed laser is amplified by a fiber amplifier and partially converted to a second-harmonic beam by a second-harmonic generator. The residual fundamental beam and second-harmonic beam are separated, attenuated, and selectively coupled into the cores of the output optical fiber.

63. 发明授权

US10992108B2 Generation of high-power spatially-restructurable spectrally-tunable beams in a multi-arm-cavity vecsel-based laser system 有权
公开(公告)号：US10992108B2
公开(公告)日：2021-04-27
申请号：US16682284
申请日：2019-11-13
申请人： ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
发明人： Mahmoud Fallahi , Ewan Wright , Chris Hessenius
IPC分类号： H01S3/10 , H01S5/10 , H01S3/08 , H01S3/082 , H01S5/04 , H01S5/06 , H01S5/065 , H01S5/183 , H01S5/14 , H01S3/00 , H01S3/109 , H01S3/11 , H01S5/00 , H01S3/081 , H01S5/40
摘要： A collinear T-cavity VECSEL system generating intracavity Hermite-Gaussian modes at multiple wavelengths, configured to vary each of these wavelengths individually and independently. A mode converter element and/or an astigmatic mode converter is/are aligned intracavity to reversibly convert the Gaussian modes to HG modes to Laguerre-Gaussian modes, the latter forming the system output having any of the wavelengths provided by the spectrum resulting from nonlinear frequency-mixing intracavity (including generation of UV, visible, mid-IR light). The laser system delivers Watt-level output power in tunable high-order transverse mode distribution.

64. 发明申请

US20210119405A1 SYSTEM AND METHOD FOR DETERMINING ABSOLUTE CARRIER-ENVELOPE PHASE OF ULTRASHORT LASER PULSES 有权
公开(公告)号：US20210119405A1
公开(公告)日：2021-04-22
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 , H01S3/10
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.

65. 发明授权

US10965093B2 Light modulation for improved photoacoustic feedback on light-induced treatments and procedures 有权
公开(公告)号：US10965093B2
公开(公告)日：2021-03-30
申请号：US15973005
申请日：2018-05-07
申请人： INSTITUT NATIONAL D'OPTIQUE
发明人： Robert B. Brown , Suzie Dufour , Pascal Gallant , Ozzy Mermut , Pascal Deladurantaye
IPC分类号： H01S3/00 , H01S3/13 , H01S3/137 , H01S3/10 , A61F9/008 , A61B5/00 , A61B18/20 , H01S3/11 , H01S3/067 , A61B18/00 , A61B18/26
摘要： Methods and systems enabling the real-time monitoring of a light-induced procedure in a biological medium, and/or the acquisition of information related to this biological medium are provided. In some implementations, the light beam used for the procedure is modulated at a modulation frequency selected in view of the photoacoustic frequency response associated with the procedure. The photoacoustic feedback signal from the medium during the procedure is then monitored. This monitoring may involve filtering the photoacoustic feedback signal around the selected feedback modulation frequency. Ratiometric comparisons of the contribution of different frequencies to the photoacoustic feedback signal are also considered.

66. 发明申请

US20210066881A1 Laser Oscillator System Having Optical Element For Injection Seeding and Method of Manufacture 有权
公开(公告)号：US20210066881A1
公开(公告)日：2021-03-04
申请号：US16957812
申请日：2018-12-20
申请人： NEWPORT CORPORATION
发明人： Kay Mittler
IPC分类号： H01S3/10 , H01S3/08 , H01S3/081 , H01S3/083 , H01S3/11
摘要： The present application is directed to various architectures of a laser oscillator which include an optical element, reflective, refractive, or diffractive injection device for injection seeding and/or locking a laser oscillator.

67. 发明申请

US20210063239A1 METHOD AND SYSTEM FOR CALIBRATING LASER POWER 有权
公开(公告)号：US20210063239A1
公开(公告)日：2021-03-04
申请号：US16660413
申请日：2019-10-22
申请人： PRIMAX ELECTRONICS LTD.
发明人： SHIH-CHIEH HSU , WEI-LUNG HUANG , PEI-MING CHANG , PAO-CHUNG CHAO , WEN-CHIH SHEN
IPC分类号： G01J1/18 , G06F17/50 , G01J1/04 , G01J1/42 , H01S3/10 , H01S3/13
摘要： Disclosures of the present invention describe a method for calibrating laser power. During a laser power calibration of a laser optics product, reference intensity data and reference power data are adopted for generating a reference trend line with a R2 value that is equal to 1. As such, real intensity data that have a residual value smaller than a threshold value are adopted for generating a first trend line in combination with real power data. Moreover, the real intensity data that have a residual value greater than the threshold value are utilized for generating a second trend line in combination with corresponding real power data. Consequently, under an assistance of a predict trend line constituted by the first trend line and the second trend line, the laser power calibration is therefore completed after the laser optics product successively emits a laser beam by a few times.

68. 发明申请

US20210063137A1 METHOD FOR FULL-FIELD MEASUREMENT USING DYNAMIC LASER DOPPLER IMAGING 有权
公开(公告)号：US20210063137A1
公开(公告)日：2021-03-04
申请号：US17097378
申请日：2020-11-13
申请人： Beijing Jiaotong University
发明人： Zhan Gao , Jie Qin , Qibo Feng , Shengjia Wang , Xu Wang , Shanwei Yang , Chenjia Gao
IPC分类号： G01B9/02 , H01S3/10
摘要： A method for full-field measurement using Doppler imaging, comprising the following steps: turning on a laser and adjusting the laser; adjusting a spatial filter to obtain circular laser spots having uniform intensity distribution; adjusting a quarter-wave plate and a whole polarizer in a system, and requiring two beams in a reference object and a measured object having different frequencies and perpendicular polarization directions; applying slight pressure to the measured object, setting a charge coupled device (CCD) camera into a continuous acquisition mode, observing interference fringes, and adjusting a light path so that the fringes are clear and visible; setting the sampling frequency, sampling time, captured image format and resolution size of the CCD camera; turning on a lithium niobate crystal drive power switch to produce a heterodyne carrier frequency; applying continuous equal pushing force to the measured object by means of piezoelectric ceramics (PZT) so as to make the measured object produce continuous bending deformation; controlling the CCD camera to sample using a computer, and collecting a set of time series light interference images along with the continuous deformation of the measured object; and processing the time series light intensity interference image to obtain a three-dimensional data module comprising continuous deformation of the measured objects distributed in time and space.

69. 发明申请

US20210057871A1 OPTICAL AMPLIFIER, CONTROL METHOD FOR OPTICAL AMPLIFIER, AND OPTICAL COMMUNICATION SYSTEM 有权
公开(公告)号：US20210057871A1
公开(公告)日：2021-02-25
申请号：US17043488
申请日：2018-03-30
申请人： NEC Corporation
发明人： Keiichi MATSUMOTO , Emmanuel LE TAILLANDIER DE GABORY
IPC分类号： H01S3/10 , H01S3/067 , H01S3/094 , H04B10/50 , H04B10/2581 , H04B10/61
摘要： A pumping light source outputs pumping lights. A pumping light source outputs a pumping light. Optical multiplexers couple the pumping lights to a plurality of cores. The optical multiplexer couples the pumping light to the clad. A pumping light source drive unit drives a pumping light source. A pumping light source drive unit drives a pumping light source. A monitoring unit outputs a monitoring signal indicating a monitoring result of the number of wavelengths used in each of optical signals amplified by the plurality of the cores. The control unit controls the power of the pumping lights based on the monitoring signal. The control unit controls the power of each of the pumping lights in accordance with the number of wavelengths used in each of the optical signals and controls the power of the pumping light so that signal qualities of the optical signals fall within a prescribed range.

70. 发明申请

US20210044079A1 SIGNAL COORDINATED DELIVERY OF LASER THERAPY 有权
公开(公告)号：US20210044079A1
公开(公告)日：2021-02-11
申请号：US16947486
申请日：2020-08-04
申请人： GYRUS ACMI, INC., D.B.A. OLYMPUS SURGICAL TECHNOLOGIES AMERICA
发明人： Sergey A. Bukesov , Brian M. Talbot , Kurt G. Shelton , Masaysau Chida , Rachel D. Schnakenberg
IPC分类号： H01S3/13 , H01S3/10 , A61B5/00 , A61B18/22
摘要： Systems, devices, and methods for delivering laser energy directed toward target tissue using a spectroscopic feedback. An exemplary laser feedback control system comprises a feedback analyzer to receive a signal from a target tissue using a spectroscopic sensor, and a laser controller to determine whether the received signal generally equals a first preset. If the received signal meets the first preset, the laser controller can send a control signal to a laser system to change from a first state to a second state of the first laser system. The laser system can deliver laser energy via an optical fiber towards the target tissue.

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