公开(公告)号：US12107380B1

公开(公告)日：2024-10-01

申请号：US18480119

申请日：2023-10-03

Applicant: Vector Atomic, Inc.

Inventor： Jonathan David Roslund ,  Arman Cingoz ,  Abijith Sudarsan Kowligy

IPC: H01S3/10 ,  H01S3/067 ,  H01S3/08 ,  H01S3/1106

CPC classification number: H01S3/10061 ,  H01S3/06791 ,  H01S3/08054 ,  H01S3/1106

Abstract: Embodiments herein describe using a birefringent element (e.g., a half-wave plate, full-wave plate, birefringent crystal, or metasurface) or a band-pass filter to reduce the laser line broadening induced by the soliton self-frequency shift. The birefringent element may a free space element that is part of the laser cavity. Due to dispersion, different frequencies (or colors) of light in the laser travel through the birefringent element at different speeds. This dispersion results in the birefringent element introducing slightly different polarization shifts for the different frequencies of light in the laser. When this light passes through a polarizer (which is set to filter out polarizations different from a desired polarization), the polarizer attenuates or extinguishes the frequencies that do not have the polarization of the design frequency of the birefringent element.

公开(公告)号：US11914165B2

公开(公告)日：2024-02-27

申请号：US17796506

申请日：2021-02-04

Applicant: JILIN UNIVERSITY

Inventor： Hongbo Sun ,  Zhenze Li ,  Qidai Chen

IPC: B23K26/0622 ,  B23K26/364 ,  B23K26/082 ,  B23K26/03 ,  B23K26/08 ,  B23K26/06 ,  B23K26/00 ,  G02B27/28 ,  G02B5/30 ,  H01S3/10 ,  B23K103/14 ,  B23K103/00 ,  G02B6/12

CPC classification number: G02B27/286 ,  B23K26/0006 ,  B23K26/032 ,  B23K26/0624 ,  B23K26/0643 ,  B23K26/0648 ,  B23K26/0652 ,  B23K26/082 ,  B23K26/0853 ,  B23K26/364 ,  G02B5/30 ,  G02B27/283 ,  H01S3/10061 ,  B23K2103/14 ,  B23K2103/54 ,  G02B2006/12116

Abstract: A method using femtosecond laser for nano precision preparation. Initial damage nanoholes formed by using femtosecond laser multiphoton excitation are used as a seed structure, and the energy and polarization state of subsequent laser pulses are adjusted in real time, such that uniform and directional optical near-field enhancement is generated near the seed structure and finally the high-precision removal of machined materials is realized. Benefiting from the high localization of near-field spot energy in space, the method uses femtosecond laser pulses having the wavelength of 800 nm to achieve a machining accuracy having the minimum linewidth of only 18 nm, and the linewidth resolution reaches 1/40 of the wavelength; and the method using femtosecond laser for nano precision preparation does not need a vacuum environment, having good air/solution machining compatibility.

公开(公告)号：US11862925B2

公开(公告)日：2024-01-02

申请号：US17277305

申请日：2018-10-30

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Shanhui Xu ,  Qilai Zhao ,  Zhitao Zhang ,  Changsheng Yang ,  Zhouming Feng ,  Zhongmin Yang

IPC: H01S3/13 ,  H01S3/08 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/16

CPC classification number: H01S3/1308 ,  H01S3/0675 ,  H01S3/06716 ,  H01S3/08013 ,  H01S3/08054 ,  H01S3/09415 ,  H01S3/094003 ,  H01S3/10061 ,  H01S3/1608 ,  H01S3/1618

Abstract: A tunable narrow-linewidth photo-generated microwave source based on polarization control includes a high-reflectivity fiber grating, a high-gain fiber, a low-reflectivity polarization-maintaining fiber grating, a stress adjusting device, a single-mode semiconductor pump laser, an optical wavelength division multiplexer, a polarization beam splitter, a polarization controller, an optical coupler, and a photoelectric detector. Birefringence distribution in the low-reflectivity polarization-maintaining fiber grating is controlled by adjusting a stress magnitude of the stress adjusting device to the low-reflectivity polarization fiber grating, thereby controlling a laser frequency working in different polarization modes in a resonant cavity, and a tunable narrow-linewidth photo-generated microwave source is generated by a beat-frequency technology using a dual-wavelength narrow-linewidth laser with variable frequency intervals.

公开(公告)号：US20230387648A1

公开(公告)日：2023-11-30

申请号：US18031309

申请日：2021-10-11

Applicant: Pavilion Integration Corporation

Inventor： Ningyi LUO ,  Jihchuang Robin HUANG

IPC: H01S3/109 ,  H01S3/16 ,  H01S3/0941 ,  H01S3/06 ,  H01S3/00 ,  H01S3/10 ,  G02F1/355

CPC classification number: H01S3/109 ,  H01S3/1653 ,  H01S3/0941 ,  H01S3/0627 ,  H01S3/0078 ,  H01S3/0071 ,  H01S3/10061 ,  G02F1/3551

Abstract: Devices, systems, and methods for generating ultraviolet lasers are disclosed. Schematics and arrangements of a combination structure implementation that often uses an intra-cavity second harmonic generation (SHG) element and a UV extractor often with a birefringent crystal (BC) to extract the UV light are described and disclosed. A Nonlinear crystal (NLC) may serve as the SHG element and volume Bragg gating (VBG) may be included to control pump light characteristics.

公开(公告)号：US20230352901A1

公开(公告)日：2023-11-02

申请号：US18315501

申请日：2023-05-11

Applicant: ELBIT SYSTEMS ELECTRO-OPTICS - ELOP LTD.

Inventor： Zeev SCHIFFER ,  Andrey NAZAROV ,  Daniel LEVY

IPC: H01S3/13 ,  H01S3/10 ,  H01S3/101 ,  H01S3/136

CPC classification number: H01S3/1307 ,  H01S3/10053 ,  H01S3/10061 ,  H01S3/101 ,  H01S3/1304 ,  H01S3/1305 ,  H01S3/1308 ,  H01S3/136

Abstract: Multi-Channels coherent beam combining (CBC) using a mechanism for phase and/or polarization locking that uses a reference optical beam and an array of optical detectors each detector being configured and located to detect overall intensity of an optical interference signal caused by interfering of the reference beam and a beam of the respective channel, where the fast intensity per-channel detection allows simultaneous and quick phase/polarization locking of all channels for improving beam combining system performances.

公开(公告)号：US11715925B2

公开(公告)日：2023-08-01

申请号：US16971499

申请日：2019-02-20

Applicant: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA

Inventor： Robert Dawson Baker

IPC: H01S3/10 ,  G02F1/01 ,  H01S3/067 ,  H01S3/08 ,  H01S3/1109 ,  H01S3/1115 ,  H01S3/16

CPC classification number: H01S3/10061 ,  G02F1/0136 ,  H01S3/06716 ,  H01S3/06791 ,  H01S3/08013 ,  H01S3/1109 ,  H01S3/1115 ,  H01S3/1608

Abstract: An optical device includes first and second 45° Faraday rotators. A 45° polarizer is located between the first and second Faraday rotators such that light in a prescribed polarization state that is incident on the first 45° Faraday rotator traverses the first 45° Faraday rotator as well as the 45° polarizer and the second 45° Faraday rotator. In one implementation the optical device is operable to receive a light beam traveling in a first direction and output a light beam that is in a predetermined polarization state. Likewise, the optical device is operable to receive an unpolarized light beam traveling in a second direction opposite the first direction and outputs a light beam that is in a predetermined polarization state. The polarization state in which the two output beams are arranged may be the same or orthogonal to one another.

公开(公告)号：US11664636B2

公开(公告)日：2023-05-30

申请号：US16870736

申请日：2020-05-08

Applicant: Amphos GmbH

Inventor： Claus Schnitzler ,  Jan Dolkemeyer ,  Torsten Mans

IPC: H01S3/00 ,  H01S3/06 ,  H01S3/0941 ,  H01S3/10 ,  H01S3/23

CPC classification number: H01S3/0606 ,  H01S3/0064 ,  H01S3/0941 ,  H01S3/10023 ,  H01S3/10061 ,  H01S3/2316 ,  H01S3/2341

Abstract: A method and system for amplifying seed laser radiation which is irradiated along an irradiation direction into a lasing amplification medium has a transverse seed laser intensity profile that is transformed into a plateaued input intensity profile by a transformer element on the irradiation side.

公开(公告)号：US20230143962A1

公开(公告)日：2023-05-11

申请号：US17913013

申请日：2021-03-10

Applicant: ASML Netherlands B.V.

Inventor： Rostislav Rokitski ,  Philip M. Conklin ,  Cory Alan Stinson ,  Alexander Anthony Schafgans ,  Christoffel Johannes Liebenberg

IPC: H01S3/23 ,  H01S3/10 ,  H01S3/00 ,  H01S3/223

CPC classification number: H01S3/2333 ,  H01S3/1003 ,  H01S3/0085 ,  H01S3/2232 ,  H01S3/10061

Abstract: Systems, apparatuses, and methods are provided for dual-pass amplification of laser beams along a common beam path. An example method can include generating a first laser beam and a second laser beam. Subsequently, the example method can include performing dual-pass amplification of the first laser beam and the second laser beam along a common beam path. In some aspects, the first laser beam can include a first wavelength, the second laser beam can include a second wavelength different from the first wavelength.

公开(公告)号：US20190249240A1

公开(公告)日：2019-08-15

申请号：US16277113

申请日：2019-02-15

Applicant: Quantum-Si Incorporated

Inventor： Jonathan M. Rothberg ,  Jason W. Sickler ,  Lawrence C. West ,  Faisal R. Ahmad ,  Paul E. Glenn ,  Jack Jewell ,  John Glenn ,  Jose Camara ,  Jeremy Christopher Jordan ,  Todd Rearick ,  Farshid Ghasemi ,  Jonathan C. Schultz ,  Keith G. Fife

IPC: C12Q1/6869 ,  H01S3/00 ,  G01N21/64 ,  H01L27/146 ,  H01S3/101 ,  H01S3/13 ,  H01S3/105 ,  H01S3/081 ,  H01S3/11 ,  H01S3/0941 ,  H01S3/10

CPC classification number: C12Q1/6869 ,  G01N21/6408 ,  G01N21/645 ,  G01N21/6458 ,  G01N2021/6439 ,  G01N2021/6441 ,  G01S7/4814 ,  H01L27/14603 ,  H01S3/0071 ,  H01S3/0405 ,  H01S3/0817 ,  H01S3/0941 ,  H01S3/10061 ,  H01S3/101 ,  H01S3/105 ,  H01S3/1115 ,  H01S3/1118 ,  H01S3/1305 ,  H01S3/1611 ,  H01S3/1673

Abstract: Apparatus and methods for producing ultrashort optical pulses are described. A high-power, solid-state, passively mode-locked laser can be manufactured in a compact module that can be incorporated into a portable instrument for biological or chemical analyses. The pulsed laser may produce sub-100-ps optical pulses at a repetition rate commensurate with electronic data-acquisition rates. The optical pulses may excite samples in reaction chambers of the instrument, and be used to generate a reference clock for operating signal-acquisition and signal-processing electronics of the instrument.

公开(公告)号：US20190006815A1

公开(公告)日：2019-01-03

申请号：US16026921

申请日：2018-07-03

Applicant: Fotona d.o.o.

Inventor： Dejan Skrabelj ,  Kranjec Jozica ,  Matjaz Lukac

IPC: H01S3/10 ,  H01S3/115 ,  H01S3/08 ,  H01S3/11 ,  H01S3/092 ,  H01S3/16 ,  H01S3/23 ,  A61N5/06

CPC classification number: H01S3/10061 ,  A61B18/203 ,  A61B2018/00452 ,  A61N5/0616 ,  A61N2005/067 ,  H01S3/08054 ,  H01S3/08059 ,  H01S3/08063 ,  H01S3/0816 ,  H01S3/092 ,  H01S3/10038 ,  H01S3/106 ,  H01S3/1103 ,  H01S3/115 ,  H01S3/1611 ,  H01S3/1643 ,  H01S3/2308 ,  H01S3/2333 ,  H01S3/2383 ,  H01S2301/206

Abstract: A laser system includes a first laser source with a laser resonator for generating a first pulsed laser beam. The resonator has a back mirror, an outcoupling mirror and an active lasing medium in between. The system includes a second laser source for generating a second pulsed laser beam and an optical block. The optical block includes a coupling polarizer and a first polarization rotator. The optical block is movable back and forth between an active position and a passive position. In its active position the optical block is located between the outcoupling mirror and the active lasing medium such that the coupling polarizer couples the second beam into the laser resonator of the first laser source while the first rotator is positioned between the outcoupling mirror and the coupling polarizer. In the active position of the optical block a second polarization rotator is between it and the back mirror.