公开(公告)号：US11682877B2

公开(公告)日：2023-06-20

申请号：US17237471

申请日：2021-04-22

Applicant: Gigaphoton Inc.

Inventor： Takashi Onose

IPC: H01S3/00 ,  G02B27/09 ,  G02B27/10 ,  H01S3/10 ,  H01S3/23 ,  H01S5/00 ,  H01S3/225

CPC classification number: H01S3/0085 ,  G02B27/0983 ,  G02B27/10 ,  H01S3/0057 ,  H01S3/10 ,  H01S3/2308 ,  H01S5/005 ,  H01S3/2251 ,  H01S2301/08 ,  H01S2301/20

Abstract: A laser system including: A. a laser apparatus configured to output a pulse laser beam; B. an optical pulse stretcher including a delay optical path for expanding a pulse width of the pulse laser beam; and C. a phase optical element included in the delay optical path and having a function of spatially and randomly shifting a phase of the pulse laser beam. The phase optical element includes a plurality of types of cells providing different amounts of phase shift to the pulse laser beam and arranged irregularly in any direction.

公开(公告)号：US20190245317A1

公开(公告)日：2019-08-08

申请号：US16343357

申请日：2017-10-25

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Masaki WADA ,  Shinichi AOZASA ,  Taiji SAKAMOTO ,  Takashi YAMAMOTO ,  Kazuhide NAKAJIMA ,  Takayoshi MORI

IPC: H01S3/067 ,  H01S3/106 ,  H04B10/2581

CPC classification number: H01S3/06791 ,  H01S3/067 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/10 ,  H01S3/106 ,  H04B10/2581

Abstract: An optical amplifier of the present disclosure includes an optical resonator that includes an amplification fiber capable of amplifying signal light having one or more propagation modes and resonates at least one propagation mode of the signal light amplified by the amplification fiber; an excitation light source that outputs excitation light for exciting the amplification fiber; and a multiplexer that multiplexes the signal light and the excitation light, in which the optical resonator includes a gain clamp setting unit which sets gain clamp for at least one propagation mode out of a plurality of propagation modes resonating in the optical resonator.

公开(公告)号：US20190239330A1

公开(公告)日：2019-08-01

申请号：US16379511

申请日：2019-04-09

Applicant: Gigaphoton Inc.

Inventor： Motoki NIWANO

IPC: H05G2/00 ,  H01S3/23 ,  H01S3/097 ,  H01S3/115

CPC classification number: H05G2/008 ,  H01S3/09702 ,  H01S3/10 ,  H01S3/115 ,  H01S3/2232 ,  H01S3/2308

Abstract: A laser device includes: a master oscillator (100) configured to output a pulse laser beam (L) based on a light emission trigger signal (S21); a delay circuit (153) configured to generate a switching signal (S10) after a predetermined delay time has elapsed since reception of the light emission trigger signal (S21); a high voltage switch (304) configured to generate a high voltage pulse based on the switching signal (S10); an optical shutter (32k) positioned on the optical path of the pulse laser beam (L) and driven based on the high voltage pulse; and a high voltage monitor (151) configured to detect the high voltage pulse and transmit a high voltage pulse sensing signal (S6) to the delay circuit (153). The delay circuit (153) determines the delay time based on the light emission trigger signal (S21) and the high voltage pulse sensing signal (S6).

公开(公告)号：US20190030641A1

公开(公告)日：2019-01-31

申请号：US16072232

申请日：2017-03-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： DOUKEI NAGAYASU ,  HITOSHI NISHIMURA ,  MAKOTO RYUDO ,  JINGBO WANG ,  YOSHIAKI TAKENAKA ,  KIYOTAKA EIZUMI ,  HIDEAKI YAMAGUCHI ,  RYO ISHIKAWA ,  MASATOSHI NISHIO

IPC: B23K26/035 ,  G02B6/28 ,  B23K26/064 ,  H01S3/10 ,  G02B6/42

CPC classification number: B23K26/035 ,  B23K26/064 ,  G02B6/2848 ,  G02B6/4206 ,  G02B6/425 ,  H01S3/10

Abstract: A fiber coupling device includes a housing and a window provided in the housing. The fiber coupling device is configured to collectively guide plural laser beams to at least a first fiber, the plurality of laser beams each being emitted from a corresponding one of plural external laser light sources and entering through a laser beam inlet. The housing is configured such that the laser beams enter the housing from the laser beam inlet. The window is provided inside the housing and faces the laser beam inlet. The fiber coupling device is not required to detach when an optical axis is adjusted.

公开(公告)号：US20180278007A1

公开(公告)日：2018-09-27

申请号：US15544613

申请日：2016-01-13

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takashi SEKINE ,  Yoshinori KATO ,  Yoshinori TAMAOKI ,  Takashi KURITA ,  Toshiyuki KAWASHIMA ,  Takaaki MORITA

IPC: H01S3/042 ,  H01S3/06 ,  H01S3/07 ,  H01S3/02 ,  H01S3/16 ,  H01S3/04 ,  H01S3/093

CPC classification number: H01S3/042 ,  H01S3/025 ,  H01S3/0407 ,  H01S3/06 ,  H01S3/0604 ,  H01S3/0608 ,  H01S3/0623 ,  H01S3/07 ,  H01S3/091 ,  H01S3/093 ,  H01S3/10 ,  H01S3/1611 ,  H01S3/1643

Abstract: A plate-like laser medium has a through-hole for providing a flow of a cooling medium. The laser medium unit includes the plurality of laser media. A laser beam amplification device includes a laser medium unit 10, an excitation light source 21 that causes excitation light to enter the laser medium unit 10, a through-hole 16a of a window member as a unit for supplying the cooling medium in a through-hole 14a of the laser medium 14, and a cooling medium flow path F1 arranged around the laser medium unit 10.

公开(公告)号：US09991666B2

公开(公告)日：2018-06-05

申请号：US14931208

申请日：2015-11-03

Applicant: Mitsubishi Electric Corporation

Inventor： Daisuke Morita

IPC: H01S5/00 ,  H01S3/10 ,  H01S5/02 ,  H01S5/20 ,  H01S5/12 ,  H01S5/22

CPC classification number: H01S3/10 ,  H01S5/0202 ,  H01S5/12 ,  H01S5/2018 ,  H01S5/22 ,  H01S2301/173 ,  H01S2301/203

Abstract: A semiconductor laser device includes a substrate, a buffer layer provided on an upper surface of the substrate and formed of InP, a laser element having a ridge structure formed above the buffer layer, and an epi intermediate layer formed of a compound semiconductor containing As and exposed to the outside.

公开(公告)号：US09958710B1

公开(公告)日：2018-05-01

申请号：US15342357

申请日：2016-11-03

Applicant: Harris Corporation

Inventor： Randall K. Morse ,  Peter A. Wasilousky ,  Lee M. Burberry ,  Michael R. Lange ,  Catheryn D. Logan ,  Pat O. Bentley

IPC: G02F3/00 ,  G02F1/11 ,  G02B27/10 ,  H03K19/14 ,  H01S3/10 ,  G02F2/00

CPC classification number: G02F1/11 ,  G02B27/1093 ,  G02F1/113 ,  G02F3/00 ,  G02F2002/008 ,  G06N99/002 ,  H01S3/10 ,  H03K19/14

Abstract: A method may include generating a laser light beam with a laser source, splitting the laser light beam into a first front side beam and a back side beam for a back side of an ion trap using a first beamsplitter, directing the front side beam to a second beamsplitter using an input telescope, and splitting the first front side beam into a plurality of second front side beams directed to a common acousto-optic medium using a second beamsplitter. The common acousto-optic medium may have a respective plurality of electrodes coupled to the common acousto-optic medium for each of the second front side beams. The method may further include directing the plurality of second front side beams to a front side of the ion trap using an output telescope, and generating a respective RF drive signal for each of the plurality of electrodes using a plurality of RF drivers.

公开(公告)号：US20180097334A1

公开(公告)日：2018-04-05

申请号：US15800429

申请日：2017-11-01

Applicant: Bien Chann ,  Robin Huang ,  Parviz Tayebati

Inventor： Bien Chann ,  Robin Huang ,  Parviz Tayebati

IPC: H01S3/105

CPC classification number: H01S3/105 ,  B01L3/50851 ,  B01L2200/147 ,  B01L2300/046 ,  B01L2300/0654 ,  B01L2300/0851 ,  G01N1/31 ,  G01N1/38 ,  H01S3/0085 ,  H01S3/0635 ,  H01S3/08009 ,  H01S3/0812 ,  H01S3/10 ,  H01S3/10023 ,  H01S3/101 ,  H01S3/1055 ,  H01S5/0071 ,  H01S5/0085 ,  H01S5/02288 ,  H01S5/02292 ,  H01S5/06253 ,  H01S5/143 ,  H01S5/4012 ,  H01S2301/20

Abstract: A system and method for tuning and infrared source laser in the Mid-IR wavelength range. The system and method comprising, at least, a plurality of individually tunable emitters, each emitter emitting a beam having a unique wavelength, a grating, a mirror positioned after the grating to receive at least one refracted order of light of at least one beam and to redirect the beam back towards the grating, and a micro-electro-mechanical systems device containing a plurality of adjustable micro-mirrors.

公开(公告)号：US09917592B2

公开(公告)日：2018-03-13

申请号：US14817605

申请日：2015-08-04

Applicant: Yuichiro Yano ,  Shigeyoshi Goka

Inventor： Yuichiro Yano ,  Shigeyoshi Goka

IPC: G01R33/26 ,  H01S3/10 ,  H03L7/26 ,  H03B17/00 ,  G04F5/14

CPC classification number: H03L7/26 ,  G01R33/26 ,  G04F5/145 ,  H01S3/10 ,  H03B17/00

Abstract: An atomic oscillator includes an alkali metal cell encapsulating an alkali metal atom; a light source that emits laser light; a light detector that detects light which has passed through the alkali metal cell; and a polarizer arranged between the alkali metal cell and the light detector. A modulation frequency in the light source is controlled, according to a coherent population trapping resonance which is a light absorption characteristic of a quantum interference effect for two kinds of resonant lights, by modulating the light source to generate sidebands and injecting laser lights with the sidebands into the alkali metal cell. A magnetic field is applied on the alkali metal cell in a direction parallel to a propagating direction of the laser light, and the laser light entering the alkali metal cell has a linear polarization, which is not parallel to a polarization direction of the polarizer.

公开(公告)号：US20170331253A1

公开(公告)日：2017-11-16

申请号：US15529065

申请日：2015-11-26

Applicant: FRIEDERICH ALAIN LOUIS ANDRE ,  HUET HOLDINGS

Inventor： Alain FRIEDERICH ,  Gael RUIZ ,  Mahmoud AFFI

IPC: H01S5/183 ,  H01S5/40 ,  C12M1/00

CPC classification number: H01S5/183 ,  C12M21/02 ,  C12M31/08 ,  G02B6/0006 ,  G02B6/0008 ,  G02B6/001 ,  G02B6/0035 ,  G02B6/0068 ,  G02B6/0096 ,  H01S3/10 ,  H01S5/20 ,  H01S2301/203

Abstract: The invention relates to a light injector element (20) comprising a body (21) extending according to a longitudinal axis (22), and a light source (23) placed facing an end (25) of the body (21), the light source (23) comprising a plurality of vertical-cavity surface-emitting laser (VCSEL) diodes, said plurality of diodes being arranged so as to form an emission surface (26) substantially perpendicular to the longitudinal axis (22) of the body (21).The invention also relates to a photobioreactor (10) comprising such a light injector element (20).