公开(公告)号：EP2130272B1

公开(公告)日：2018-11-14

申请号：EP08744160.6

申请日：2008-03-21

Applicant: Imra America, Inc.

Inventor： CHO, Gyu, C. ,  BOUEVITCH, Oleg

IPC: H01S3/00 ,  B23K26/04

CPC classification number: B23K26/043 ,  H01S3/0057 ,  H01S3/0071 ,  H01S3/067 ,  H01S3/2308

Abstract: A laser head generating ultrashort pulses is integrated with an active beam steering device in the head. Direct linkage with an application system by means of an adequate interface protocol enables the active device to be controlled directly by the application system.

公开(公告)号：EP2487762B1

公开(公告)日：2018-10-31

申请号：EP11193580.5

申请日：2011-12-14

Applicant: Raytheon Company

Inventor： Stultz, Robert ,  Filgas, David ,  Ushinsky, Michael

IPC: H01S3/067 ,  H01S3/113 ,  H01S3/08

CPC classification number: H01S3/113 ,  H01S3/067 ,  H01S3/08045

Abstract: A laser (10) includes a pump source (12) that provides pump energy at a first wavelength and a laser cavity (14). The laser cavity includes a laser gain medium (16) that receives the pump energy from the pump source and creates gain at a second wavelength different from the first wavelength, and a mode stripping portion (18) coupled to the laser gain medium. The mode stripping portion causes the laser cavity to have a low Fresnel number so as to allow only the lowest-order fiber mode to resonate in the laser cavity. Higher-order fiber modes are discriminated against so as to generate a laser output (22) having a substantially diffraction limited beam in a single transverse mode at the second wavelength.

公开(公告)号：EP2909898B1

公开(公告)日：2018-07-11

申请号：EP13795824.5

申请日：2013-10-22

Applicant: Commissariat à l'Énergie Atomique et aux Énergies Alternatives

Inventor： FOURCAULT, William ,  CHARRAT, Bruno ,  LEGER, Jean-Michel

IPC: H01S3/067 ,  H01S3/04 ,  H01S3/042 ,  H01S3/08 ,  H01S3/0933 ,  H01S3/0941

CPC classification number: H01S3/06704 ,  H01S3/0405 ,  H01S3/042 ,  H01S3/067 ,  H01S3/06708 ,  H01S3/06712 ,  H01S3/0675 ,  H01S3/08031 ,  H01S3/0933 ,  H01S3/0941 ,  Y10T29/49826

公开(公告)号：EP3306759A1

公开(公告)日：2018-04-11

申请号：EP17817645.9

申请日：2017-03-06

Applicant: Fujikura Ltd.

Inventor： KITAHARA Rintaro

IPC: H01S3/067 ,  G02B6/02 ,  G02B6/036 ,  H01S3/10

CPC classification number: G02B6/03616 ,  G02B6/02 ,  G02B6/036 ,  G02B6/03605 ,  G02B6/03694 ,  H01S3/067 ,  H01S3/10 ,  H01S3/10007

Abstract: An amplification optical fiber 10 according to the present invention includes: a core 11 doped with an active element, through which multi-mode light can propagate; inner cladding 12 surrounding the core 11 and having a refractive index lower than that of the core 11; and outer cladding 13 surrounding the inner cladding 12 and having a refractive index lower than that of the inner cladding 12, wherein the inner cladding 12 has a polygonal outline in a cross section perpendicular to the longitudinal direction, and the inner cladding 12 has a permanent twist applied by turning around the central axis of the core 11.

Abstract translation: 根据本发明的放大光纤10包括：掺杂有有源元件的芯11，多模光可以通过该有源元件传播; 围绕芯11并具有比芯11的折射率低的折射率的内包层12; 以及围绕内包层12并具有比内包层12的折射率低的折射率的外包层13，其中内包层12在垂直于纵向的横截面中具有多边形轮廓，并且内包层12具有永久的 通过绕芯11的中心轴线转动而施加扭转。

公开(公告)号：EP3193413A4

公开(公告)日：2017-12-27

申请号：EP16840274

申请日：2016-10-26

Applicant: FUJIKURA LTD

Inventor： KASHIWAGI MASAHIRO

IPC: H01S3/067 ,  G02B6/02 ,  H01S3/23

CPC classification number: H01S3/2391 ,  G02B6/02 ,  H01S3/067

Abstract: A fiber laser system enables an improved reflection resistance property. The fiber laser system includes fiber lasers (2 through 4) each having a laser medium which is an optical fiber made from silica glass. A difference between respective lasing wavelengths of any given two of the fiber lasers is greater than a wavelength equivalent to a half width at half maximum of a peak deriving from a vibration mode of a planar four-membered ring of a Si-O network structure of silica glass.

公开(公告)号：EP2859628B1

公开(公告)日：2017-11-22

申请号：EP13800945.1

申请日：2013-06-06

Applicant: National University of Singapore

Inventor： ÖZYILMAZ, Barbaros ,  NI, Guang Xin ,  ZHENG, Yi

IPC: H01S5/06 ,  H01S3/127 ,  H01L51/00 ,  H01L33/00 ,  H01L27/15 ,  H01G9/20 ,  C23C16/01 ,  C23C16/26 ,  G02F1/35 ,  H01S3/067 ,  H01S3/11 ,  H01S3/094

CPC classification number: H01S3/1115 ,  C23C16/01 ,  C23C16/04 ,  C23C16/26 ,  C23C16/44 ,  G02F1/3523 ,  H01S3/067 ,  H01S3/06791 ,  H01S3/094046

Abstract: The invention relates to a novel type of gate-tunable photonics and plasmonics which utilizes doped large-scale graphene coupled with ferroelectric material. The graphene-ferroelectric hybrid structure paves the way for the realization of ultra-fast, low power consumption and multi-wavelength operation saturable absorbers for applications in ultra-fast laser systems and novel types of plasmonics for applications in infrared detection, single-photon quantum devices and ultrasensitive detectors.

公开(公告)号：EP3220492A1

公开(公告)日：2017-09-20

申请号：EP17151401.1

申请日：2017-01-13

Applicant: Omron Corporation

Inventor： FUKUI, Hiroshi ,  YOKOI, Tadamasa ,  OGAKI, Tatsuo ,  TANI, Shuichi ,  SAKAMOTO, Tatsunori ,  ISHIZU, Yuichi

IPC: H01S3/13 ,  H01S3/067

CPC classification number: H01S3/067 ,  H01S3/0064 ,  H01S3/06758 ,  H01S3/06779 ,  H01S3/094003 ,  H01S3/09415 ,  H01S3/10007 ,  H01S3/10038 ,  H01S3/10046 ,  H01S3/1618

Abstract: A light amplifier according to an aspect of the present invention includes: a seed light source (2) configured to generate a pulsing seed light; an excitation light source (3, 7) configured to generate excitation light; a light amplifying fiber (1, 9) configured to amplify the seed light by the excitation light and output the amplified light; and a control unit (20) configured to control the seed light source (2) and the excitation light source (3, 7). The control unit (20) has a mode to control the excitation light's power such that as a set value of a pulse width of the amplified light increases, the amplified light's peak energy increases within a threshold value at a minimum set value of the pulse width.

Abstract translation: 根据本发明的一个方面的光放大器包括：种子光源（2），被配置为生成脉冲种子光; 激励光源（3,7），其被配置为产生激励光; 光放大光纤（1,9），被配置为通过激发光放大种子光并输出放大的光; 和控制单元（20），其被配置为控制种子光源（2）和激发光源（3,7）。 控制单元（20）具有控制激发光的功率的模式，使得随着放大光的脉冲宽度的设定值增加，放大的光的峰值能量在阈值内以脉冲宽度的最小设定值 。

公开(公告)号：EP2666578A4

公开(公告)日：2017-06-21

申请号：EP12736446

申请日：2012-01-17

Applicant: FURUKAWA ELECTRIC CO LTD

Inventor： KASHIWAGI KOSUKE ,  FUJISAKI AKIRA ,  EMORI YOSHIHIRO

IPC: B23K26/02 ,  B23K26/042 ,  B23K26/08 ,  H01S3/00 ,  H01S3/06 ,  H01S3/094

CPC classification number: H01S3/0675 ,  B23K26/042 ,  H01S3/067 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/09415 ,  H01S3/10038 ,  H01S3/2375 ,  H01S3/2391

Abstract: In order to perform alignment accurately in a fiber laser apparatus that irradiates invisible laser light, a fiber laser apparatus 1 that generates invisible laser light using an amplification optical fiber (15) having a single-mode core and outputs the invisible laser light via an output optical fiber (34) is provided that includes a visible laser light source (11) that generates visible laser light, an introducing section (30, 31) that introduces the visible laser light generated by the visible laser light source into a core of one of the amplification optical fiber (15) and the output optical fiber, and a drive unit (40) that drives, in a case of performing alignment of an irradiation position of the invisible laser light with respect to a workpiece, the visible laser light source and emits the visible laser light via the core of the output optical fiber.

Abstract translation: 为了在照射不可见激光的光纤激光装置中精确地进行对准，使用具有单模型芯的放大光纤（15）产生不可见激光并通过输出端输出不可见激光的光纤激光装置1 提供包括产生可见激光的可见激光光源（11）的光纤（34），将由可见激光光源产生的可见激光引入到光纤中的一个的核心的引入部分（30,31） 放大用光纤15和输出用光纤，以及驱动部40，其在将不可见激光的照射位置相对于工件进行了对准的情况下，驱动可见激光光源和 通过输出光纤的芯发射可见激光。

公开(公告)号：EP2089943B1

公开(公告)日：2017-01-04

申请号：EP07870320.4

申请日：2007-11-21

Applicant: Centre National de la Recherche Scientifique (C.N.R.S.)

Inventor： PIOGER, Paul-Henri ,  VERGNE, Bertrand ,  COUDERC, Vincent ,  BARTHELEMY, Alain

IPC: H01S3/00 ,  G02F1/35

CPC classification number: H01S3/067 ,  G02F1/3511 ,  H01S3/06712 ,  H01S3/08031 ,  H01S3/094076 ,  H01S3/1112

公开(公告)号：EP2965390A4

公开(公告)日：2016-11-09

申请号：EP14760623

申请日：2014-03-06

Applicant: IPG PHOTONICS CORP

Inventor： FOMIN VALENTIN ,  ABRAMOV MIKHAIL ,  FERIN ANTON ,  SAMARTSEV IGOR ,  GAPONTSEV VALENTIN

IPC: H01S3/067 ,  H01S3/00 ,  H01S3/04 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/098 ,  H01S3/10

CPC classification number: H01S3/06708 ,  H01S3/005 ,  H01S3/0407 ,  H01S3/067 ,  H01S3/06745 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094019 ,  H01S3/094053 ,  H01S3/094069 ,  H01S3/09408 ,  H01S3/09415 ,  H01S3/10

Abstract: A high power fiber laser system includes a booster winch is configured as a fiber amplifier extending over free space, pump source and laser head including a reflective element which receives pump light and reflects toward the output end of the booster in a counter signal-propagating direction. The booster is configured with concentric and coextending frustoconically shaped (“MM”) core and cladding around the core. The core includes a mode transition region expanding between small diameter SM input and large diameter MM output core ends and configured so that amplification of high order modes is substantially suppressed as a single mode (“SM”) signal light propagates from the input to output core ends. The laser head receives output ends of respective pump light delivery fibers and signal fiber, respectively. The pump source is structured with a plurality of independent sub pumps arranged around the booster. The laser head supports a segmented mirror configured to reflect pump lights from respective pump sub-sources to the output end of the booster in a counter propagating direction, wherein the booster is configured to emit the amplified signal light reaching up to MW power levels substantially in the SM.