公开(公告)号：US09322993B1

公开(公告)日：2016-04-26

申请号：US14601938

申请日：2015-01-21

Applicant: OFS FITEL, LLC

Inventor： William R Holland

IPC: G02B6/26 ,  G02B6/42 ,  G02B6/255 ,  G02B6/06 ,  G02B6/245 ,  G02B6/25

CPC classification number: H01S3/094007 ,  G02B6/245 ,  G02B6/25 ,  G02B6/2856 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094053 ,  H01S3/09408

Abstract: As kilowatt class fiber laser and amplifier systems become more in demand, there are ongoing efforts to improve optical fiber laser and amplifier designs to maximize efficiency and further increase the capacity of these high-energy optical fiber lasers and amplifiers. The present disclosure provides a fiber laser or amplifier system configured to efficiently and conveniently generate and couple high numerical aperture and high-energy pump light into a fiber laser or amplifier system.

Abstract translation: 随着千瓦级光纤激光器和放大器系统的需求越来越多，目前正在努力改进光纤激光器和放大器设计，以最大限度地提高效率，并进一步提高这些高能量光纤激光器和放大器的容量。 本公开提供了一种光纤激光器或放大器系统，其被配置为有效且方便地将高数值孔径和高能量泵浦光产生并耦合到光纤激光器或放大器系统中。

公开(公告)号：US20160033720A1

公开(公告)日：2016-02-04

申请号：US14445199

申请日：2014-07-29

Applicant: OFS FITEL, LLC

Inventor： David J. DiGiovanni

IPC: G02B6/028 ,  G02B6/255 ,  G02B6/036

CPC classification number: H01S3/094007 ,  C03B37/01217 ,  C03B2203/22 ,  C03B2203/31 ,  G02B6/024 ,  G02B6/0285 ,  G02B6/03616 ,  G02B6/03622 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/255 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/06733 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094053 ,  H01S3/09408 ,  H01S3/0941 ,  H01S3/09415

Abstract: A double-clad (DC) polarization-maintaining (PM) optical fiber comprises a core, an inner cladding, an outer cladding, and stress rods. The core has a core refractive index (ncore). The inner cladding is located radially exterior to the core and has an inner cladding refractive index (n1), which is less than ncore. The stress rods are located in the inner cladding, and each stress rod has a stress rod refractive index (n2), which is substantially matched to n1. The outer cladding is located radially exterior to the inner cladding. The outer cladding has an outer cladding refractive index (nout), which is less than n1.

Abstract translation: 双包层（DC）偏振维持（PM）光纤包括芯，内包层，外包层和应力棒。 核心具有核心折射率（ncore）。 内包层位于芯的径向外侧，并且具有小于ncore的内包层折射率（n1）。 应力杆位于内包层中，每个应力杆具有与n1基本匹配的应力棒折射率（n2）。 外包层位于内包层的径向外侧。 外包层具有小于n1的外包层折射率（nout）。

公开(公告)号：US09225143B1

公开(公告)日：2015-12-29

申请号：US13970236

申请日：2013-08-19

Applicant: Arete Associates

Inventor： James Thomas Murray

IPC: H01S3/08 ,  H01S3/083 ,  H01S3/11

CPC classification number: H01S3/094084 ,  H01S3/0405 ,  H01S3/0606 ,  H01S3/0612 ,  H01S3/0617 ,  H01S3/08054 ,  H01S3/08095 ,  H01S3/083 ,  H01S3/09408 ,  H01S3/0941 ,  H01S3/11 ,  H01S3/115 ,  H01S3/1611 ,  H01S3/1615 ,  H01S3/1643 ,  H01S3/1685 ,  H01S3/1698

Abstract: A compact laser is provided for in accordance with an exemplary embodiment in the present disclosure includes a compact resonator structure using a non-planar geometry of bulk components. The laser includes a preferred rotational direction of lasing modes and employs bulk components for establishing the preferred rotational direction of lasing modes within resonator. In some embodiments, the preferred rotational direction of lasing modes is established using a reflective element that is outside the resonator structure. In some embodiments, the reflective element induces polarization shifts in the reflected light that are compensated for by a wave plate, which may be outside the resonator structure.

Abstract translation: 根据本公开的示例性实施例，提供了一种紧凑型激光器，其包括使用散装部件的非平面几何形状的紧凑型谐振器结构。 激光器包括优选的激光模式的旋转方向，并且使用体积分量来建立谐振器内的激光模式的优选旋转方向。 在一些实施例中，使用在谐振器结构外部的反射元件来建立激光模式的优选旋转方向。 在一些实施例中，反射元件引起由波片补偿的反射光中的偏振偏移，波片可能在谐振器结构外部。

公开(公告)号：US20150349481A1

公开(公告)日：2015-12-03

申请号：US14293941

申请日：2014-06-02

Applicant: nLIGHT Photonics Corporation

Inventor： Dahv A.V. Kliner

IPC: H01S3/094

CPC classification number: H01S3/094042 ,  G01B9/02 ,  G02B6/43 ,  H01S3/06704 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094053 ,  H01S3/09408 ,  H01S3/09415 ,  H01S5/4012

Abstract: A modular and scalable high-power fiber laser system is configurable to generate 1 kW or more of laser output, and includes one or more separable pump modules separately disposed from each other, each pump module including a plurality of fiber-coupled component pump sources optically combined by one or more fiber-based pump module pump combiners, each pump module providing one or more pump module fiber outputs, and a gain module separately disposed from the one or more separable pump modules and including one or more gain module pump fiber inputs optically coupled to corresponding ones of the pump module fiber outputs, and including a gain fiber optically coupled to the one or more gain module pump fiber inputs, the gain fiber configured to generate a gain module fiber output power scalable in relation to the number and power of said pump module fiber outputs coupled to the gain fiber.

Abstract translation: 模块化和可扩展的大功率光纤激光系统可配置为产生1kW或更多的激光输出，并且包括彼此分开设置的一个或多个可分离泵模块，每个泵模块包括多个光纤耦合组件泵浦光源 由一个或多个基于纤维的泵模块泵组合器组合，每个泵模块提供一个或多个泵模块光纤输出，以及增益模块，该增益模块与所述一个或多个可分离的泵模块分开布置，并且包括一个或多个增益模块泵浦光纤输入光学 耦合到相应的泵模块光纤输出端，并且包括光耦合到所述一个或多个增益模块泵浦光纤输入的增益光纤，所述增益光纤被配置为产生增益模块光纤输出功率，所述增益模块光纤输出功率可相对于 所述泵模块光纤输出耦合到增益光纤。

公开(公告)号：US09172208B1

公开(公告)日：2015-10-27

申请号：US13771770

申请日：2013-02-20

Applicant: Lawrence Livermore National Security, LLC

Inventor： Jay W. Dawson ,  Graham S. Allen ,  Paul H. Pax ,  John E. Heebner ,  Arun K. Sridharan ,  Alexander M. Rubenchik ,  Chrisopher B. J. Barty

IPC: G01C3/08 ,  H01S3/30

CPC classification number: H01S3/302 ,  H01S3/005 ,  H01S3/0625 ,  H01S3/094042 ,  H01S3/09408 ,  H01S3/2308 ,  H01S3/30

Abstract: An optical source capable of enhanced scaling of pulse energy and brightness utilizes an ensemble of single-aperture fiber lasers as pump sources, with each such fiber laser operating at acceptable pulse energy levels. Beam combining involves stimulated Raman scattering using a Stokes' shifted seed beam, the latter of which is optimized in terms of its temporal and spectral properties. Beams from fiber lasers can thus be combined to attain pulses with peak energies in excess of the fiber laser self-focusing limit of 4 MW while retaining the advantages of a fiber laser system of high average power with good beam quality.

Abstract translation: 能够增强脉冲能量和亮度的缩放的光源利用单孔光纤激光器的集合作为泵浦源，每个这样的光纤激光器以可接受的脉冲能量级运行。 光束组合涉及使用斯托克斯移位种子束的受激拉曼散射，后者根据其时间和光谱特性进行优化。 光纤激光器的光束可以组合起来，获得超过光纤激光自聚焦极限4兆帕的峰值能量的脉冲，同时保持具有良好光束质量的高平均功率的光纤激光系统的优点。

公开(公告)号：US09172202B2

公开(公告)日：2015-10-27

申请号：US13879528

申请日：2010-10-18

Applicant: Hirofumi Imai ,  Koji Hirano

Inventor： Hirofumi Imai ,  Koji Hirano

IPC: H01S3/30 ,  H01S3/067 ,  B23K26/06 ,  H01S3/094 ,  H01S3/00 ,  H01S3/17 ,  H01S3/23

CPC classification number: H01S3/06716 ,  B23K26/0613 ,  H01S3/005 ,  H01S3/0675 ,  H01S3/094011 ,  H01S3/09408 ,  H01S3/175 ,  H01S3/23

Abstract: A laser apparatus of the present invention has a first laser oscillator that emits a first laser beam; a passive fiber that is a double-clad fiber that transmits the first laser beam through a core; and a second laser oscillator that emits a second laser beam that is coupled into inner cladding of the passive fiber. Additionally, a laser materials processing apparatus of the present invention is provided with the laser apparatus; and an irradiation optical system having a collimating lens and a condenser lens.

Abstract translation: 本发明的激光装置具有发射第一激光束的第一激光振荡器; 无源光纤，其是透过第一激光束通过芯的双包层光纤; 以及第二激光振荡器，其发射耦合到无源光纤的内包层中的第二激光束。 另外，本发明的激光材料处理装置具备激光装置， 以及具有准直透镜和聚光透镜的照射光学系统。

公开(公告)号：US09140850B2

公开(公告)日：2015-09-22

申请号：US14107928

申请日：2013-12-16

Applicant: FURUKAWA ELECTRIC CO., LTD. ,  TOHOKU GAKUIN

Inventor： Yu Mimura ,  Hiroshi Matsuura

IPC: H01S3/00 ,  G02B6/02 ,  G02B6/32 ,  H01S3/067 ,  G02B6/293

CPC classification number: G02B6/02042 ,  G02B6/2848 ,  G02B6/2937 ,  G02B6/2938 ,  G02B6/32 ,  H01S3/0078 ,  H01S3/06737 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094019 ,  H01S3/09408 ,  H01S3/09415 ,  H01S3/1608 ,  H01S3/2383

Abstract: An optical coupling structure optically coupling a plurality of core portions and a plurality of core portions includes a plurality of first core portions outputting a plurality of lights, a first lens focusing or collimating the plurality of lights outputted from the plurality of first core portions, a second lens focusing the plurality of lights focused or collimated by the first lens, a plurality of second core portions, the plurality of lights focused by the second lens being inputted into the second core portions respectively, and an optical functional component disposed between the first lens and the second lens, the plurality of lights being inputted into the optical functional component. At least one of the first lens and the second lens is configured by a lens or a lens group focusing or collimating the plurality of lights collectively.

Abstract translation: 光耦合多个芯部和多个芯部的光学耦合结构包括：多个第一芯部，其输出多个光;聚焦或准直多个第一芯部分输出的多个光的第一透镜; 第二透镜对由第一透镜聚焦或准直的多个光束进行聚焦，多个第二芯部分，由第二透镜聚焦的多个光分别被输入到第二核心部分中，并且光学功能部件设置在第一透镜 和第二透镜，多个光被输入光功能部件。 第一透镜和第二透镜中的至少一个通过集中聚焦或准直多个光的透镜或透镜组构成。

公开(公告)号：US20150263480A1

公开(公告)日：2015-09-17

申请号：US14620681

申请日：2015-02-12

Applicant: AMS Research Corporation

Inventor： Rongwei Jason Xuan ,  Michael R. Hodel ,  Douglas G. Stinson ,  Raymond Adam Nemeyer

IPC: H01S3/094 ,  H01S5/042 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/131 ,  H01S5/40 ,  H01S3/06

CPC classification number: H01S3/094076 ,  H01S3/061 ,  H01S3/0612 ,  H01S3/0817 ,  H01S3/09408 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/1022 ,  H01S3/109 ,  H01S3/11 ,  H01S3/1312 ,  H01S3/1611 ,  H01S3/1643 ,  H01S5/0428 ,  H01S5/4018 ,  H01S5/4025

Abstract: In a method, a laser pump module is set to a first power mode and pump energy is output at a first power level through the activation of a first subset of laser diodes. Laser light is emitted from a gain medium at the first power level in response to absorption of the pump energy. An operator input corresponding to a power mode setting is received. The laser pump module is switched to a second power mode and pump energy is output at a second power level through the activation of a second subset of the laser diodes. Laser light is emitted from the gain medium at the second power level in response to absorption of the pump energy.

Abstract translation: 在一种方法中，激光泵模块被设置为第一功率模式，并且泵能量通过激活第一激光二极管子集而以第一功率电平输出。 响应于泵浦能量的吸收，激光以第一功率水平从增益介质发射。 接收对应于电源模式设置的操作员输入。 激光泵模块切换到第二功率模式，并且泵能量通过激活激光二极管的第二子集而在第二功率电平输出。 响应于泵浦能量的吸收，激光以第二功率电平从增益介质发射。

公开(公告)号：US09112328B2

公开(公告)日：2015-08-18

申请号：US13505560

申请日：2010-11-03

Applicant: Nicholas Traynor ,  Johan Boullet ,  Eric Cormier ,  Ramatou Bello Doua

Inventor： Nicholas Traynor ,  Johan Boullet ,  Eric Cormier ,  Ramatou Bello Doua

IPC: H01S3/067 ,  H01S3/23 ,  H01S3/16 ,  G02B6/02 ,  G02B6/036 ,  H01S3/00 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/117

CPC classification number: H01S3/0672 ,  G02B6/02366 ,  G02B6/03627 ,  H01S3/0064 ,  H01S3/0092 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/06737 ,  H01S3/06741 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094011 ,  H01S3/094015 ,  H01S3/09408 ,  H01S3/09415 ,  H01S3/117 ,  H01S3/1611 ,  H01S3/1616 ,  H01S3/1618 ,  H01S3/2308

Abstract: An optical source having a fiber emitting controlled single-transverse mode radiation at a wavelength of less than 1030 nm, includes at least one laser diode suitable for emitting a pumping wave; and a section of sheathed amplifying optical fiber having two ends, the amplifying optical fiber comprising a core and a pumping sheath, the fiber being doped with a rare earth dopant; a device for coupling the pumping source in the sheath of the doped fiber, characterized in that the core of the doped fiber includes a cylindrical portion doped with a rare earth element selected among ytterbium, neodymium, and thulium, in order to obtain a refractive index of the core that is higher than the refractive index of the sheath; the excitation wavelength of the laser diode is between 750 nm and 960 nm; the diameter of the sheath is greater than 50 microns, and the surface ratio of the doped core to the pumping sheath is between 8 and 50.

Abstract translation: 具有发射波长小于1030nm的受控单横模辐射的光纤的光源包括适于发射泵浦波的至少一个激光二极管; 以及具有两端的护套放大光纤的一部分，所述放大光纤包括芯和泵送护套，所述光纤掺杂有稀土掺杂剂; 用于将泵浦源耦合在掺杂光纤的护套中的装置，其特征在于，掺杂光纤的芯包括掺杂有选自镱，钕和a中的稀土元素的圆柱形部分，以获得折射率 的芯高于护套的折射率; 激光二极管的激发波长在750nm和960nm之间; 护套的直径大于50微米，并且掺杂芯与泵送护套的表面比率在8至50之间。

公开(公告)号：US20150168642A1

公开(公告)日：2015-06-18

申请号：US14107928

申请日：2013-12-16

Applicant: TOHOKU GAKUIN ,  FURUKAWA ELECTRIC CO., LTD.

Inventor： Yu MIMURA ,  Hiroshi Matsuura

IPC: G02B6/02 ,  H01S3/067 ,  G02B6/32

CPC classification number: G02B6/02042 ,  G02B6/2848 ,  G02B6/2937 ,  G02B6/2938 ,  G02B6/32 ,  H01S3/0078 ,  H01S3/06737 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094019 ,  H01S3/09408 ,  H01S3/09415 ,  H01S3/1608 ,  H01S3/2383

Abstract: An optical coupling structure optically coupling a plurality of core portions and a plurality of core portions includes a plurality of first core portions outputting a plurality of lights, a first lens focusing or collimating the plurality of lights outputted from the plurality of first core portions, a second lens focusing the plurality of lights focused or collimated by the first lens, a plurality of second core portions, the plurality of lights focused by the second lens being inputted into the second core portions respectively, and an optical functional component disposed between the first lens and the second lens, the plurality of lights being inputted into the optical functional component. At least one of the first lens and the second lens is configured by a lens or a lens group focusing or collimating the plurality of lights collectively.

Abstract translation: 光耦合多个芯部和多个芯部的光学耦合结构包括：多个第一芯部，其输出多个光;聚焦或准直多个第一芯部分输出的多个光的第一透镜; 第二透镜对由第一透镜聚焦或准直的多个光束进行聚焦，多个第二芯部分，由第二透镜聚焦的多个光分别被输入到第二核心部分中，并且光学功能部件设置在第一透镜 和第二透镜，多个光被输入光功能部件。 第一透镜和第二透镜中的至少一个通过集中聚焦或准直多个光的透镜或透镜组构成。