公开(公告)号：US20230402810A1

公开(公告)日：2023-12-14

申请号：US18259078

申请日：2023-03-07

Applicant: Pavilion Integration Corporation

Inventor： Haiwen Wang ,  Ningyi Luo ,  Jihchuang Robin Huang

IPC: H01S3/10 ,  H01S3/081 ,  H01S3/16 ,  H01S3/08 ,  H01S3/109

CPC classification number: H01S3/10053 ,  H01S3/0815 ,  H01S3/1603 ,  H01S3/08054 ,  H01S3/109

Abstract: The present invention provides a way to use anisotropic laser gain media to make a laser that can lase in two longitudinal modes at different wavelengths with orthogonal polarizations. The two longitudinal mode (LM) laser output can be separated to generate two single LM outputs. This type of lasers can also be used to generate low noise continuous wave (CW) harmonics through intracavity harmonic generation.

公开(公告)号：US20190006814A1

公开(公告)日：2019-01-03

申请号：US16123328

申请日：2018-09-06

Applicant: Gigaphoton Inc.

Inventor： Hirotaka MIYAMOTO

IPC: H01S3/1055 ,  H01S3/038 ,  H01S5/00 ,  G03F7/20

CPC classification number: H01S3/1055 ,  G03F7/70025 ,  G03F7/70575 ,  H01S3/038 ,  H01S3/08004 ,  H01S3/08036 ,  H01S3/08054 ,  H01S3/0971 ,  H01S3/106 ,  H01S3/2251 ,  H01S5/0064

Abstract: A laser apparatus includes: a laser chamber in which a pair of discharge electrodes is provided; a first beam expander configured to expand a beam width of a beam outputted from the laser chamber at least in a first direction substantially parallel to a direction of electric discharge between the discharge electrodes; and a line narrow optical system including: a second beam expander configured to expand a beam width of the beam outputted from the laser chamber at least in a second direction substantially perpendicular to the first direction, the second beam expander including at least one optical element and a grating configured to perform wavelength dispersion of the beam expanded by the first and second beam expanders, the wavelength dispersion being performed in a plane substantially parallel to the second direction, wherein at least one of the grating and the at least one optical element is arranged so as to compensate for wavelength dispersion caused by the first beam expander.

公开(公告)号：US20180309260A1

公开(公告)日：2018-10-25

申请号：US15957787

申请日：2018-04-19

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Young Min JHON ,  Byunghyuck MOON ,  Young In JOHN ,  Minah SEO ,  Jaehun KIM ,  Yongsang RYU ,  Taikjin LEE ,  Seok LEE

IPC: H01S3/11 ,  H01S3/00 ,  H01S3/10 ,  H01S3/08

CPC classification number: H01S3/1112 ,  H01S3/08027 ,  H01S3/08036 ,  H01S3/08054 ,  H01S3/092 ,  H01S3/0941 ,  H01S3/10061 ,  H01S3/107 ,  H01S3/1075 ,  H01S3/11 ,  H01S3/1103 ,  H01S3/1109 ,  H01S3/115 ,  H01S3/1611 ,  H01S3/1623 ,  H01S3/1625 ,  H01S3/1636 ,  H01S3/1643 ,  H01S2301/08

Abstract: Disclosed herein is a single pulse laser apparatus which includes a first mirror and a second mirror disposed at both ends of the single pulse laser apparatus and having reflectivities of a predetermined level or more; a gain medium rotated at a predetermined angle and configured to oscillate a laser beam in a manual mode-locking state; a linear polarizer configured to output a beam having a specific polarized component of the oscillated laser beam; an etalon configured to adjust a pulse width of the oscillated laser beam; and an electro-optic modulator configured to perform Q-switching and single pulse switching.

公开(公告)号：US20180269653A1

公开(公告)日：2018-09-20

申请号：US15592905

申请日：2017-05-11

Applicant: Massachusetts Institute of Technology

Inventor： Katia SHTYRKOVA ,  Erich P. IPPEN ,  Franz X. KAERTNER ,  Patrick T. CALLAHAN ,  Michael R. WATTS

IPC: H01S5/065 ,  H01S5/06 ,  H01S5/026 ,  H01S5/062 ,  H01S5/10 ,  H01S5/04 ,  H01S5/042 ,  H01S5/024 ,  H01S5/0625

CPC classification number: H01S5/0657 ,  H01S3/0637 ,  H01S3/08054 ,  H01S3/082 ,  H01S3/1112 ,  H01S3/1616 ,  H01S3/1636 ,  H01S5/02453 ,  H01S5/026 ,  H01S5/041 ,  H01S5/042 ,  H01S5/0604 ,  H01S5/06236 ,  H01S5/06246 ,  H01S5/06251 ,  H01S5/0651 ,  H01S5/1007

Abstract: An artificial saturable absorber uses additive pulse mode-locking to enable pulse operation of an on-chip laser operation. Four different artificial saturable absorbers are disclosed. The first includes an integrated coupler, two arms each containing some implementation of the end-reflector, and a phase bias element in one arm. The second includes an integrated directional coupler, two integrated waveguide arms, and another integrated coupler as an output. The third includes an integrated birefringent element, integrated birefringent-free waveguide, and integrated polarizer. And the fourth includes a multimode waveguide that allows for different modes to propagate in such a way that the difference in the spatial distribution of intensity causes a nonlinear phase difference between the modes. These are just some examples of an on-chip fully integrated artificial saturable absorber with instantaneous recovery time that allow for generation of sub-femtosecond optical pulses at high repetition rates using passive mode-locking.

公开(公告)号：US20180248334A1

公开(公告)日：2018-08-30

申请号：US15903555

申请日：2018-02-23

Applicant: Research Foundation of the City University of New York

Inventor： Muhammad Ali Ummy

IPC: H01S3/137 ,  H01S3/067 ,  H01S3/10 ,  H01S3/08

CPC classification number: H01S3/06791 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/06766 ,  H01S3/06787 ,  H01S3/08013 ,  H01S3/08027 ,  H01S3/08031 ,  H01S3/08036 ,  H01S3/08054 ,  H01S3/08059 ,  H01S3/083 ,  H01S3/10007 ,  H01S3/1003 ,  H01S3/10061 ,  H01S3/137 ,  H01S5/021 ,  H01S5/142 ,  H01S5/4012 ,  H01S5/4062 ,  H01S5/4068 ,  H01S2301/02

Abstract: A dual output semiconductor optical amplifier-based tunable fiber laser is provided that can be switched from low to high power and vice versa. The laser system uses bidirectional semiconductor optical amplifier (SOA) for amplification and hence is able to introduce a unique feature of adjustable dual/single output ports.

公开(公告)号：US10009136B2

公开(公告)日：2018-06-26

申请号：US15583526

申请日：2017-05-01

Applicant: Oplink Communications, LLC

Inventor： Zuon-Min Chuang ,  Rang-Chen Yu ,  Domenico DiMola ,  Sung-Ping Huang

IPC: H04B10/27 ,  H04J14/00 ,  H04J14/02 ,  H01S3/08 ,  H01S5/14 ,  H01S3/10 ,  H01S3/106 ,  H01S5/065 ,  H01S5/00 ,  H04Q11/00 ,  H04J14/06 ,  H04B10/2507 ,  H04B10/50

CPC classification number: H04J14/0246 ,  H01S3/08027 ,  H01S3/08054 ,  H01S3/10061 ,  H01S3/106 ,  H01S3/1062 ,  H01S5/0064 ,  H01S5/0078 ,  H01S5/02438 ,  H01S5/0656 ,  H01S5/1021 ,  H01S5/141 ,  H01S5/143 ,  H01S5/146 ,  H01S2301/14 ,  H01S2301/163 ,  H04B10/2572 ,  H04B10/501 ,  H04B10/505 ,  H04B10/572 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0282 ,  H04J14/06 ,  H04Q11/0067 ,  H04Q2011/0009 ,  H04Q2011/0032 ,  H04Q2011/0035

Abstract: Methods, systems, and apparatus, for an external cavity FP laser. In one aspect, an apparatus is provided that includes a FP laser diode; a Faraday rotator (FR) coupled to receive an optical output of the FP laser diode and that rotates a polarization of the optical output; an optical fiber coupled at a first end to receive the output of the FR; a WDM filter coupled to a second end of the optical fiber to receive the optical signal from the optical fiber; and a FRM coupled directly or indirectly to an output of the WDM filter, wherein an optical output of the WDM filter is partially reflected by the FRM such that the polarization of a reflected beam is rotated, and wherein the reflected optical signal then passes through the FR with its polarization being rotated by the FR before it is injected back into the FP laser diode.

公开(公告)号：US09905990B1

公开(公告)日：2018-02-27

申请号：US14689964

申请日：2015-04-17

Applicant: Alakai Defense Systems, Inc.

Inventor： Ken Pohl ,  Matthew King ,  Adam J. Hopkins ,  Alan Ford

IPC: H01S3/106 ,  G01N21/65 ,  H01S3/08 ,  H01S3/1055 ,  H01S3/107

CPC classification number: H01S3/1062 ,  G01J3/44 ,  G01N21/65 ,  H01S3/025 ,  H01S3/08054 ,  H01S3/0809 ,  H01S3/0823 ,  H01S3/105 ,  H01S3/1055 ,  H01S3/1068 ,  H01S3/107

Abstract: A system, apparatus, and method for multiple wavelength Raman interrogation laser generation and Raman spectra acquisition. An intracavity laser tuning subsystem is integrated into the laser cavity. The tuning subsystem allows switching between at least two laser output frequencies in a manner effective for good identification and separation of Raman spectra from non-Raman spectra, including auto-fluorescence from the sample and background. The tuning subsystem can be implemented in different ways in the cavity. It does not require material alteration of the line-narrowing components. Also, processing of acquired raw signal from the multiple wavelength interrogation can further assist effective Raman spectra identification and separation.

公开(公告)号：US09843154B2

公开(公告)日：2017-12-12

申请号：US15071554

申请日：2016-03-16

Applicant: Parviz Tayebati ,  Bien Chann

Inventor： Parviz Tayebati ,  Bien Chann

IPC: H01S3/08 ,  H01S3/082 ,  H01S5/00 ,  H01S5/40 ,  G02B27/10 ,  H01S5/14 ,  H01S3/139 ,  H01S3/23

CPC classification number: H01S3/0826 ,  G02B27/1006 ,  H01S3/08 ,  H01S3/08054 ,  H01S3/139 ,  H01S3/2391 ,  H01S5/005 ,  H01S5/141 ,  H01S5/143 ,  H01S5/4012 ,  H01S5/4068 ,  H01S5/4087

Abstract: A system and method for stabilizing and combining multiple emitted beams into a single system using both WBC and WDM techniques.

公开(公告)号：US09806484B2

公开(公告)日：2017-10-31

申请号：US15034130

申请日：2013-11-22

Applicant: HAN'S LASER TECHNOLOGY INDUSTRY GROUP CO., LTD. ,  HAN'S CNC TECHNOLOGY CO., LTD.

Inventor： Lei Xiao ,  Chengwan Gong ,  Jiantao Zhao ,  Jinbin Yang ,  Yanhua Ning ,  Yunfeng Gao

IPC: H01S3/06 ,  H01S3/16 ,  G02B5/00 ,  G02B5/30 ,  H01S3/081 ,  H01S3/0933 ,  H01S3/08 ,  H01S3/02 ,  H01S3/042

CPC classification number: H01S3/0604 ,  G02B5/001 ,  G02B5/3066 ,  H01S3/025 ,  H01S3/042 ,  H01S3/0612 ,  H01S3/0615 ,  H01S3/0804 ,  H01S3/08054 ,  H01S3/08059 ,  H01S3/081 ,  H01S3/0813 ,  H01S3/0933 ,  H01S3/094084 ,  H01S3/1618 ,  H01S3/1643 ,  H01S2301/14 ,  H01S2301/20

Abstract: A radial polarization disk laser, including a pumping source, a collimator lens, a focusing lens, a laser gain medium, a Brewster axial cone, and a output lens, which are sequentially arranged along a laser light path. An angle formed between the conical surface and the bottom surface of said Brewster axial cone is a Brewster's angle. Said laser gain medium is bonded with said bottom surface; said laser gain medium and said output lens form a laser harmonic oscillator cavity therebetween. The pumped laser light emitted by said pumping source passes through said collimator lens and said focusing lens, then is focused on the laser gain medium, and. the generated photons oscillate in said laser harmonic oscillator cavity, and then a radial polarized laser beam is finally output by said output lens.

公开(公告)号：US20170077667A1

公开(公告)日：2017-03-16

申请号：US15264509

申请日：2016-09-13

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Benjamin Stanford Williams ,  Luyao Xu ,  Daguan Chen

IPC: H01S3/08 ,  H01S5/068 ,  H01S5/343 ,  H01S5/14 ,  H01S5/024 ,  H01S5/34

CPC classification number: H01S3/08059 ,  H01S3/08054 ,  H01S5/02407 ,  H01S5/02469 ,  H01S5/0425 ,  H01S5/06821 ,  H01S5/14 ,  H01S5/18 ,  H01S5/2027 ,  H01S5/22 ,  H01S5/3214 ,  H01S5/3401 ,  H01S5/3402 ,  H01S5/34313 ,  H01S5/42

Abstract: A metasurface reflector for quantum cascade lasing is disclosed. The metasurface reflector uses an array of subcavities disposed on a substrate and spaced with a sub-wavelength period. Each of the subcavities includes a layer of quantum-cascade-laser-active material sandwiched between two metallic layers. The array of subcavities reflect an incident light of a resonant frequency with amplification. When used with an output coupler, a quantum cascade laser beam can be generated.

Abstract translation: 公开了用于量子级联激光的分表面反射器。 分表面反射器使用设置在基板上并与亚波长周期隔开的子透镜阵列。 每个子像素包括夹在两个金属层之间的量子级联激光活性材料层。 子像素的阵列反映了具有放大的共振频率的入射光。 当与输出耦合器一起使用时，可以产生量子级联激光束。