公开(公告)号：EP3072190B1

公开(公告)日：2018-08-22

申请号：EP14806562.6

申请日：2014-11-20

Applicant: TRUMPF Laser GmbH

Inventor： HUBER, Rudolf ,  KILLI, Alexander ,  RIED, Steffen ,  TILLKORN, Christoph ,  ZIMER, Hagen

IPC: H01S5/14 ,  H01S5/40

CPC classification number: H01S3/13 ,  G02B27/1006 ,  H01S5/141 ,  H01S5/4012 ,  H01S5/4062 ,  H01S5/4087

Abstract: Wavelength-selective external resonators can be used to greatly increase the output brightness of dense wavelength beam combining (DWBC) system beams by stabilizing the wavelengths of the beams emitted by the individual emitters of the DWBC laser source. The present invention pertains to external resonant cavities that utilize thin-film filtering elements as wavelength-selective elements in external resonators. The present invention further pertains to particular embodiments that utilize thin-film filtering elements in DWBC systems as both output beam coupling elements and wavelength selective elements. The present invention provides advantages over the prior art that include decreased cost, increased fidelity of wavelength selection, and increased wall plug efficiency.

公开(公告)号：EP3306760A1

公开(公告)日：2018-04-11

申请号：EP15892960.4

申请日：2015-05-28

Applicant: Wenzhou Fibre Laser Co., Ltd.

Inventor： YU, Qinyue ,  HU, Jingfu

IPC: H01S5/40 ,  H01S5/10

CPC classification number: G02B27/1086 ,  G02B19/0057 ,  G02B27/1006 ,  G02B27/143 ,  G02B27/30 ,  H01S5/1039 ,  H01S5/143 ,  H01S5/4012 ,  H01S5/405 ,  H01S5/4062 ,  H01S5/4087

Abstract: Disclosed is a laser array beam combiner. A laser array emits a laser beam bundle that is incident on and transmits through a fast-axis collimator to form a one-dimensional quasi-parallel beam bundle A. The first quasi-parallel beam bundle is then incident on and transmits through the cylindrical lens to form a two-dimensional quasi-parallel beam bundle B. The quasi-parallel beam bundle B is then incident on and transmits through the dispersion unit and returns along the original path to the cylindrical lens, and then transmits through the cylindrical lens to be focused onto a common image point. Thus, the wavelengths of various light emitting spots of the laser array can be locked and the individual array beams can be automatically synthesized as a single-point beam bundle, improving the brightness of the laser array.

Abstract translation: 公开了一种激光阵列光束组合器。 激光器阵列发射入射在快轴准直器上并穿过快轴准直器以形成一维准平行束束A的激光束束。然后，第一准平行束束入射到并透过柱面透镜 以形成二维准平行束束B.然后，准平行束束B入射并穿过分散单元并沿着原始路径返回到柱面透镜，然后透过柱面透镜成为 专注于一个共同的形象点。 因此，可以锁定激光器阵列的各种发光点的波长，并且可以将单个阵列光束自动合成为单点光束，从而提高激光器阵列的亮度。

公开(公告)号：EP2413439A4

公开(公告)日：2018-01-24

申请号：EP10755950

申请日：2010-03-17

Applicant: FURUKAWA ELECTRIC CO LTD

Inventor： KIMOTO TATSUYA ,  KIYOTA KAZUAKI

IPC: H01S5/02 ,  G02B6/122 ,  G02B6/28 ,  G02B6/42 ,  H01S5/022 ,  H01S5/026 ,  H01S5/0683 ,  H01S5/40 ,  H01S5/50

CPC classification number: G02B6/2808 ,  G02B6/4206 ,  G02B6/4215 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/026 ,  H01S5/0683 ,  H01S5/4012 ,  H01S5/4025 ,  H01S5/4062 ,  H01S5/4087

Abstract: A semiconductor laser module includes a semiconductor device in which at least a semiconductor laser and a bending waveguide are integrated, a beam splitter, and a plurality of detectors. The laser light emitted from the semiconductor laser propagates through the bending waveguide, the laser light emitted through the bending waveguide is input to the beam splitter, a part of the laser light input to the beam splitter is branched by the beam splitter, and the part of the laser light branched is detected by the detectors arranged at different positions in the cross section of a light flux of the part of the laser light. In this semiconductor laser module, a waveform shaping unit configured to make a relation between an output of the semiconductor laser and detection values of the detectors approach a linear relation is provided on an optical path. With this configuration, a wavelength locking control can be stably performed with a high degree of accuracy.

公开(公告)号：EP3118948A4

公开(公告)日：2017-12-13

申请号：EP15762037

申请日：2015-03-03

Applicant: HAMAMATSU PHOTONICS KK

Inventor： ZHENG YUJIN ,  KAN HIROFUMI

IPC: H01S5/14 ,  H01S3/08 ,  H01S3/081 ,  H01S5/026 ,  H01S5/40

CPC classification number: H01S5/4062 ,  H01S3/0804 ,  H01S3/08081 ,  H01S3/0815 ,  H01S5/02438 ,  H01S5/026 ,  H01S5/10 ,  H01S5/141 ,  H01S5/4025 ,  H01S5/405 ,  H01S5/4068 ,  H01S5/42

Abstract: A semiconductor laser device includes: a semiconductor laser array in which a plurality of active layers that emit laser lights with a divergence angle ¸ S (>4°) in a slow axis direction are arranged in the slow axis direction; a first optical element that reflects first partial lights advancing to one side in the slow axis direction by a first reflecting surface and returns the first partial lights to the active layers; and a second optical element that reflects partial mode lights of a plurality of mode beams of second partial lights advancing to the other side in the slow axis direction by a second reflecting surface and returns the partial mode lights to the active layers, the first optical element is disposed such that the first reflecting surface forms an angle equal to or greater than 2° and less than (¸ S /2) with a plane perpendicular to an optical axis direction of the active layers, and the second optical element is disposed such that the second reflecting surface forms an angle greater than (-¸ S /2) and equal to or less than -2° with the plane perpendicular to the optical axis direction of the active layers.

公开(公告)号：EP3208898A1

公开(公告)日：2017-08-23

申请号：EP15851517.1

申请日：2015-10-13

Applicant: Amada Holdings Company Ltd. ,  Lumentum Operations LLC

Inventor： USUDA, Kaori ,  OGATA, Minoru

IPC: H01S5/068 ,  B23K26/00 ,  H01S5/40

CPC classification number: H01S5/0427 ,  B23K26/00 ,  B23K26/702 ,  H01S3/131 ,  H01S5/005 ,  H01S5/0071 ,  H01S5/02252 ,  H01S5/02423 ,  H01S5/042 ,  H01S5/0617 ,  H01S5/0683 ,  H01S5/141 ,  H01S5/4012 ,  H01S5/4018 ,  H01S5/4025 ,  H01S5/4062 ,  H01S5/4087

Abstract: A semiconductor laser oscillator (11) includes a diode unit (11u) configured from a plurality of banks, in which one bank is configured from a plurality of laser diodes connected in series. The diode unit (11u) includes a wavelength locking mechanism for locking to a plurality of wavelengths. The semiconductor laser oscillator (11) includes a controller (114) configured to control input currents to the laser diodes of each of the plurality of banks individually in correspondence to a characteristic of a wavelength locking efficiency, and to control an output of the diode unit (11u) as a whole to a required output.

Abstract translation: 半导体激光振荡器（11）包括由多个组构成的二极管单元（11u），其中一个组由多个串联连接的激光二极管构成。 二极管单元（11u）包括用于锁定到多个波长的波长锁定机构。 半导体激光振荡器（11）包括：控制器（114），其被配置为分别根据波长锁定效率的特性来控制到多个存储体中的每个存储体的激光二极管的输入电流，并且控制二极管单元 （11u）作为一个整体达到要求的产出。

公开(公告)号：EP3072190A1

公开(公告)日：2016-09-28

申请号：EP14806562.6

申请日：2014-11-20

Applicant: TRUMPF Laser GmbH

Inventor： HUBER, Rudolf ,  KILLI, Alexander ,  RIED, Steffen ,  TILLKORN, Christoph ,  ZIMER, Hagen

IPC: H01S5/14 ,  H01S5/40

CPC classification number: H01S3/13 ,  G02B27/1006 ,  H01S5/141 ,  H01S5/4012 ,  H01S5/4062 ,  H01S5/4087

Abstract: Wavelength-selective external resonators can be used to greatly increase the output brightness of dense wavelength beam combining (DWBC) system beams by stabilizing the wavelengths of the beams emitted by the individual emitters of the DWBC laser source. The present invention pertains to external resonant cavities that utilize thin-film filtering elements as wavelength-selective elements in external resonators. The present invention further pertains to particular embodiments that utilize thin-film filtering elements in DWBC systems as both output beam coupling elements and wavelength selective elements. The present invention provides advantages over the prior art that include decreased cost, increased fidelity of wavelength selection, and increased wall plug efficiency.

公开(公告)号：EP3010096A1

公开(公告)日：2016-04-20

申请号：EP15190166.7

申请日：2015-10-16

Applicant: Lumentum Operations LLC

Inventor： MUENDEL, Martin H. ,  MA, Xiuquan

IPC: H01S3/08 ,  H01S5/40 ,  H01S5/14

CPC classification number: H01S3/2391 ,  H01S3/08036 ,  H01S3/0805 ,  H01S3/08063 ,  H01S3/0811 ,  H01S5/141 ,  H01S5/4062 ,  H01S5/4068 ,  H01S5/4087

Abstract: A beam combiner (24) may include source elements (100), each configured to output a beam of light locked at a center wavelength different from center wavelengths of other source elements. The beam combiner may include a dispersive element like a transmission grating (102) configured to combine the beams of light into a combined beam, and a beam separator (103) configured to separate the combined beam into an output beam (109) and a locking beam (112) in the common branch (104) of the external resonator. The beam combiner includes a spatial filter configured to prevent crosstalk within the locking beam, and to redirect the locking beam to the source elements (100). The dispersive element may be configured to disperse the locking beam into constituent wavelength beams. Each constituent wavelength beam may be directed to a respective one of the source elements for locking that source element at its center wavelength, and may correspond in wavelength to the center wavelength of the respective source element. The spatial filter may comprise two lenses (105,107) building a telescope with an aperture (106) in the focal plane and a retro-reflector (108) for reflecting the laser beams back to the source elements (100).

Abstract translation: 光束组合器（24）可以包括源元件（100），每个源元件（100）被配置为输出锁定在不同于其它源元件的中心波长的中心波长的光束。 光束组合器可以包括像透射光栅（102）的分散元件，其被配置为将光束组合成组合光束;以及光束分离器（103），其配置成将组合光束分离成输出光束（109）和锁定 光束（112）在外部谐振器的公共支路（104）中。 光束组合器包括被配置为防止锁定光束内的串扰并且将锁定光束重定向到源元件（100）的空间滤光器。 分散元件可以被配置为将锁定光束分散成组成的波长束。 每个构成波长光束可以被引导到源元件中的相应一个，用于将该源元件锁定在其中心波长处，并且可以在波长对应于相应源极元件的中心波长。 空间滤波器可以包括在焦平面中构建具有孔径（106）的望远镜的两个透镜（105,107）和用于将激光束反射回源元件（100）的回射反射器（108）。

公开(公告)号：EP2999064A1

公开(公告)日：2016-03-23

申请号：EP14185625.2

申请日：2014-09-19

Applicant: DirectPhotonics Industries GmbH

Inventor： Fritsche, Haro ,  Koch, Ralf ,  Kruschke, Bastian ,  Ferrario, Fabio

IPC: H01S5/14 ,  H01S5/40 ,  H01S3/08 ,  H01S3/106 ,  H01S5/028

CPC classification number: H01S5/068 ,  H01S3/08054 ,  H01S3/08063 ,  H01S3/106 ,  H01S3/1068 ,  H01S5/0228 ,  H01S5/02438 ,  H01S5/0287 ,  H01S5/141 ,  H01S5/143 ,  H01S5/4062

Abstract: The present invention relates to a diode laser with external spectrally selective feedback.
It is an object of the invention is to provide a diode laser with wavelength stabilization which allows an increased overall output power in the desired wavelength range.
According to the invention, a diode laser arrangement is disclosed comprising: an active layer positioned inside a laser cavity (10), the laser cavity (10) comprising an exit facet (12) adapted for outcoupling laser radiation; an external frequency-selective element (14) positioned outside the laser cavity (10) and adapted for wavelength stabilization of the laser radiation, and a beam divider (16) adapted to divide the outcoupled laser radiation (B0) into a first beam (B1) extending along a first beam path (P1) and a second beam (B2) extending along a second beam path (P2), the first beam (B1) having higher radiant intensity than the second beam (B2) and the first beam path (P1) being different from the second beam path (P2), wherein the external frequency-selective element (14) is arranged in the second beam path (P2).

Abstract translation: 本发明涉及具有外部光谱选择反馈的二极管激光器。 本发明的目的是提供一种具有波长稳定性的二极管激光器，其允许在期望的波长范围内增加总输出功率。 根据本发明，公开了一种二极管激光装置，其包括：位于激光腔（10）内的有源层，所述激光腔（10）包括适于外耦合激光辐射的出射小面（12） 位于激光腔（10）外部并适于激光辐射的波长稳定的外部频率选择元件（14）和适于将输出耦合的激光辐射（B0）分成第一光束（B1 ）和沿着第二光束路径（P2）延伸的第二光束（B2）延伸，所述第一光束（B1）具有比所述第二光束（B2）和所述第一光束路径（B2）更高的辐射强度 P1）与第二光束路径（P2）不同，其中外部频率选择元件（14）被布置在第二光束路径（P2）中。

公开(公告)号：EP2940809A1

公开(公告)日：2015-11-04

申请号：EP15168957.7

申请日：2006-02-16

Applicant: Petrescu-Prahova, Iulian Basarab

Inventor： Petrescu-Prahova, Iulian Basarab

IPC: H01S5/40 ,  H01S5/20 ,  H01S5/065

CPC classification number: H01S5/4081 ,  H01S5/0655 ,  H01S5/20 ,  H01S5/2004 ,  H01S5/2036 ,  H01S5/205 ,  H01S5/4031 ,  H01S5/4062 ,  H01S2301/18

Abstract: Diode laser array type of devices with a periodic arrangement of active element segments and passive inter-element segments. The segments have equal effective refractive indices so that the active elements are coupled and operate on one or more supermode. The array is arranged between lateral boundary segments having a lower effective refractive index which serves to discriminate the anti-phase supermode against all other modes.

Abstract translation: 二极管激光器阵列类型的器件具有有源元件段和被动元件间段的周期排列。 这些段具有相同的有效折射率，使得有源元件被耦合并在一个或多个超模上操作。 阵列布置在具有较低有效折射率的横向边界段之间，其用于区分反相超模与所有其它模式。

公开(公告)号：EP2908391A1

公开(公告)日：2015-08-19

申请号：EP14305213.2

申请日：2014-02-17

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

Inventor： Duan, Guang-Hua ,  Brenot, Romain ,  Le Liepvre, Alban ,  Mourey, Bruno

IPC: H01S5/06 ,  H01S5/14 ,  H01S5/40 ,  H04J14/02

CPC classification number: H04B10/572 ,  H01S5/0612 ,  H01S5/141 ,  H01S5/142 ,  H01S5/4062 ,  H01S5/4087 ,  H04B10/0795 ,  H04B10/27 ,  H04B10/503 ,  H04B10/506

Abstract: The present invention concerns a method for controlling the emitting wavelength of a laser source (10) for a passive optical network, the laser source (10) comprising:
- a first Bragg mirror (12),
- a second Bragg mirror (14),
- a cavity (16) delimited by both Bragg mirrors (12, 14), the cavity (16) comprising an optical filter (18) and an active medium (20),
the method comprising the steps of:
- measuring the temperature of the active medium (20),
- setting the temperature of the optical filter (18) in accordance with the measured temperature of the active medium (20), the temperature of the optical filter (18) being higher than the measured temperature.

Abstract translation: 本发明涉及一种用于控制无源光网络的激光源（10）的发射波长的方法，所述激光源（10）包括： - 第一布拉格反射镜（12）， - 第二布拉格反射镜（14） - 由布拉格反射镜（12,14）限定的空腔（16），所述空腔（16）包括光学滤光器（18）和活性介质（20），所述方法包括以下步骤： - 测量 活性介质（20）， - 根据所述活性介质（20）的测量温度设定所述滤光器（18）的温度，所述滤光器（18）的温度高于所述测量温度。