公开(公告)号：US09553421B2

公开(公告)日：2017-01-24

申请号：US14571367

申请日：2013-10-16

Applicant: IMRA AMERICA, INC.

Inventor： Martin E. Fermann

IPC: H01S3/067 ,  H01S3/00 ,  B23K26/062 ,  H01S3/11 ,  H01S3/094 ,  H01J49/16

CPC classification number: H01S3/1106 ,  B23K26/0624 ,  H01J49/161 ,  H01S3/0057 ,  H01S3/06708 ,  H01S3/06741 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094026 ,  H01S3/094042 ,  H01S3/094061 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/1115

Abstract: The present invention relates to compact, low noise, ultra-short pulse sources based on fiber amplifiers, and various applications thereof. At least one implementation includes an optical amplification system having a fiber laser seed source producing seed pulses at a repetition rate corresponding to the fiber laser cavity round trip time. A nonlinear pulse transformer, comprising a fiber length greater than about 10 m, receives a seed pulse at its input and produces a spectrally broadened output pulse at its output, the output pulse having a spectral bandwidth which is more than 1.5 times a spectral bandwidth of a seed pulse. A fiber power amplifier receives and amplifies spectrally broadened output pulses. A pulse compressor is configured to temporally compress spectrally broadened pulses amplified by said power amplifier. Applications include micro-machining, ophthalmology, molecular desorption or ionization, mass-spectroscopy, and/or laser-based, biological tissue processing.

Abstract translation: 本发明涉及基于光纤放大器的紧凑，低噪声，超短脉冲源及其各种应用。 至少一个实施方案包括具有光纤激光种子源的光放大系统，其以对应于光纤激光腔往返时间的重复频率产生种子脉冲。 包括光纤长度大于约10微米的非线性脉冲变压器在其输入处接收种子脉冲，并在其输出端产生光谱扩展的输出脉冲，其输出脉冲的光谱带宽大于光谱带宽的1.5倍 种子脉冲。 光纤功率放大器接收并放大光谱扩展的输出脉冲。 脉冲压缩器被配置为在时间上压缩由所述功率放大器放大的频谱变宽的脉冲。 应用包括微加工，眼科学，分子解吸或离子化，质谱法和/或基于激光的生物组织处理。

公开(公告)号：US20160359293A1

公开(公告)日：2016-12-08

申请号：US15173055

申请日：2016-06-03

Applicant: Thales Holdings UK Plc

Inventor： Stephen LEE ,  William ALEXANDER ,  Trevor COOK

IPC: H01S3/113 ,  G01S17/08

CPC classification number: H01S3/113 ,  G01S17/08 ,  H01S3/0941 ,  H01S3/1022 ,  H01S3/1061 ,  H01S3/1618 ,  H01S3/1643

Abstract: A method for use in controlling emission of an optical pulse from a laser comprises pumping a gain medium of a laser at a rate which is limited so that free-running passive Q-switching of the laser is prevented regardless of a duration of pumping of the gain medium. The method further comprises triggering a saturable absorber of the laser so as to reduce a laser cavity loss below a laser cavity gain and cause an optical pulse to be emitted from the laser at a desired emission time. Such a method may provide for the reduction of pulse-to-pulse timing jitter, the control of energy of the emitted optical pulse and/or for the suppression of the emission of multiple optical pulses that may otherwise occur for free-running passive Q-switching of the laser for sufficient gain medium pumping rates.

Abstract translation: 用于控制来自激光器的光脉冲的发射的方法包括以限制的速率泵浦激光器的增益介质，使得防止激光的自由运行的无源Q切换，而不管泵浦的持续时间如何 增益介质。 该方法还包括触发激光器的可饱和吸收器，以便减少低于激光腔增益的激光腔损耗，并使得在期望的发射时间从激光器发射光脉冲。 这种方法可以提供脉冲到脉冲定时抖动的减少，发射的光脉冲的能量的控制和/或用于抑制可能出现的自由运行的无源Q-脉冲的多个光脉冲的发射。 切换激光器以获得足够的增益介质泵送速率。

公开(公告)号：US20160348636A1

公开(公告)日：2016-12-01

申请号：US15166296

申请日：2016-05-27

Applicant: Princeton Optronics Inc.

Inventor： Chuni L. Ghosh ,  Qing Wang ,  Bing Xu ,  Robert van Leeuwen

IPC: F02P23/04

CPC classification number: F02P23/04 ,  F02B19/12 ,  F02P13/00 ,  F02P15/08 ,  H01S3/025 ,  H01S3/0405 ,  H01S3/0407 ,  H01S3/061 ,  H01S3/0627 ,  H01S3/094053 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/113 ,  H01S3/2383 ,  H01S5/423

Abstract: A high efficiency optical ignition device is provided in a two-part compact and robust package to be mounted directly on an internal combustion engine chamber. The ignition device ignites a combustion fuel with a high intensity plasma generated by a high power laser beam from a solid state laser operable in Q-switched, or non-Q-switched mode for producing short or long pulses, respectively. Multiple pulses are generated, and duration and frequency of the laser beam pulses are controlled by controlling an optical pump module to pump the solid state laser. The optical pump module comprises a semiconductor laser, preferably a VCSEL device. One or more laser beams are precisely directed, each one to a desired location anywhere within the combustion chamber for more efficient and near complete burning of the combustion fuel. The robust packaging is well suited to withstand mechanical and thermal stresses of the internal combustion engine.

Abstract translation: 高效率的光学点火装置设置在两部分紧凑且坚固的包装中，以直接安装在内燃机室上。 点火装置用来自固态激光器的高功率激光束产生的高强度等离子体燃烧燃烧燃料，该固体激光器可以分别用于产生短脉冲或长脉冲的Q开关或非Q开关模式。 产生多个脉冲，通过控制光泵模块来泵浦固态激光器来控制激光束脉冲的持续时间和频率。 光泵模块包括半导体激光器，优选VCSEL器件。 一个或多个激光束被精确地引导到燃烧室中的任何地方的每个位置到达期望的位置，以便燃烧燃料的更有效和接近完全的燃烧。 坚固的包装非常适合承受内燃机的机械和热应力。

公开(公告)号：US20160336709A1

公开(公告)日：2016-11-17

申请号：US14947181

申请日：2015-11-20

Applicant: JGM Associates, Inc.

Inventor： Jeffrey G. Manni

IPC: H01S3/08 ,  H01S3/16 ,  H01S5/40 ,  H01S3/117 ,  H01S3/0941 ,  H01S3/06 ,  H01S3/115

CPC classification number: H01S3/08081 ,  H01S3/0602 ,  H01S3/0615 ,  H01S3/08072 ,  H01S3/09408 ,  H01S3/094084 ,  H01S3/0941 ,  H01S3/1103 ,  H01S3/1115 ,  H01S3/115 ,  H01S3/117 ,  H01S3/1603 ,  H01S5/4025

Abstract: A laser including a solid state laser gain medium having a D-shaped cross section and an unstable resonator laser cavity including the solid state laser gain medium configured with a geometric magnification in a range of 1 to 5 under the intended operating conditions, including the effects of thermal lensing in the gain medium. An optical switching device in the unstable resonator laser cavity generates a pulse duration in the range of 0.05 to 100 nanoseconds. A diode-pump source is configured to inject pump light through the curved or barrel surface of the D-shaped gain medium.

Abstract translation: 一种激光器，包括具有D形横截面的固体激光增益介质和不稳定谐振腔激光器腔，所述固态激光器腔体包括在预期操作条件下配置有1至5范围内的几何倍率的固态激光增益介质，包括效果 的增透介质中的热透镜。 不稳定谐振腔激光腔中的光开关器件产生0.05至100纳秒范围内的脉冲持续时间。 二极管泵浦源被配置为将泵浦光注入D形增益介质的弯曲或桶表面。

公开(公告)号：US09496683B1

公开(公告)日：2016-11-15

申请号：US13897216

申请日：2013-05-17

Applicant: nLIGHT Photonics Corporation

Inventor： Manoj Kanskar

IPC: H01S5/06 ,  H01S5/065 ,  H01S3/063 ,  H01S3/13 ,  H01S3/137 ,  H01S3/139

CPC classification number: H01S3/139 ,  H01S3/063 ,  H01S3/0635 ,  H01S3/0941 ,  H01S3/13 ,  H01S3/137 ,  H01S5/146 ,  H01S5/4012 ,  H01S5/4062

Abstract: A diode laser apparatus includes an optical fiber having a multi-mode inner cladding and a core, the core having a fiber Bragg grating disposed therein, a plurality of diode lasers configured to emit light, and optics configured to receive the light and to couple the light into the optical fiber, wherein a portion of the light coupled into the optical fiber is reflected by the fiber Bragg grating and is coupled back through the optics into the diode lasers so as to lock the wavelength thereof.

Abstract translation: 一种二极管激光装置包括具有多模内包层和芯的光纤，该芯具有设置在其中的光纤布拉格光栅，配置成发光的多个二极管激光器，以及被配置为接收光并耦合 光入射到光纤中，其中耦合到光纤中的一部分光被光纤布拉格光栅反射，并通过光学器件耦合回到二极管激光器中，以便锁定其波长。

公开(公告)号：US20160329754A1

公开(公告)日：2016-11-10

申请号：US15095373

申请日：2016-04-11

Applicant: WI-CHARGE LTD.

Inventor： ORTAL ALPERT ,  RUDIGER PASCHOTTA

IPC: H02J50/30 ,  H01S3/00 ,  H01S3/08 ,  H01S3/06

CPC classification number: H02J50/30 ,  H01S3/005 ,  H01S3/0604 ,  H01S3/0805 ,  H01S3/08059 ,  H01S3/08072 ,  H01S3/083 ,  H01S3/0941 ,  H01S3/1307 ,  H01S5/041 ,  H01S5/10 ,  H01S5/14 ,  H01S5/183 ,  H04B10/114 ,  H04B10/807 ,  H04B2001/0416

Abstract: An optical power beam transmission systems, with a directional light transmitter and receiver. The transmitter contains an amplifying laser medium, and this together with a retroreflector in the receiver, forms a laser resonator. When lasing sets in, the receiver can extract optical power through an output coupler and convert it to electrical power. The gain medium may be a disc having a thickness substantially smaller than its lateral dimensions. The laser resonator is operated as a stable resonator to ensure safe operation. This is achieved by use of an adaptive optical element, for reducing the diameter of the energy beam impinging on the gain medium, thereby increasing the overlap between the energy beam and the gain medium. As the transmitter-receiver distance is changed, such as by movement of the receiver, the adaptive optical element focal length changes to ensure that the cavity remains within its stability zone.

Abstract translation: 光功率光束传输系统，带有定向光发射器和接收器。 发射机包含放大激光介质，并与接收机中的后向反射器一起形成激光谐振器。 当激光投射时，接收器可以通过输出耦合器提取光功率并将其转换为电能。 增益介质可以是具有基本上小于其横向尺寸的厚度的盘。 激光谐振器作为稳定的谐振器运行，以确保安全运行。 这通过使用自适应光学元件来实现，用于减小入射到增益介质上的能量束的直径，从而增加能量束和增益介质之间的重叠。 随着发射器 - 接收器距离的改变，例如通过接收器的移动，自适应光学元件焦距变化，以确保空腔保持在其稳定区域内。

公开(公告)号：US20160322775A1

公开(公告)日：2016-11-03

申请号：US15108457

申请日：2013-12-27

Applicant: ACADEMY OF OPTO-ELECTRONICS, CHINESE ACADEMY OF SCIENCES

Inventor： Zhongwei FAN ,  Jisi QIU ,  Xiongxin TANG ,  Tianzhuo ZHAO

IPC: H01S3/0941 ,  H01S3/042 ,  H01S3/094 ,  H01S3/06 ,  H01S5/40 ,  H01S5/022

CPC classification number: H01S3/0941 ,  H01S3/0405 ,  H01S3/042 ,  H01S3/0604 ,  H01S3/0606 ,  H01S3/0615 ,  H01S3/094057 ,  H01S3/094084 ,  H01S5/0228 ,  H01S5/4025

Abstract: A large-aperture laser amplifier side-pumped by a multi-dimensional laser diode stack, which comprises: multiple pumping light source assemblies; a laser medium, of which the shape is a prismoid, wherein both the upside surface and the underside surface of the prismoid are polygonal, and the number of the edges of the polygon is the same as the number of the pumping light source assemblies; and a cooling device. Each side of the laser medium is provided with a pumping light source assembly; the pumping light emitted from the semiconductor laser diode stack is shaped by the beam shaping element, coupled by the coupling duct, and then enters from the side of the laser medium for side-pumping, and thereby amplifying the laser beam incident from the upside surface of the prismoid of the laser medium.

Abstract translation: 由多维激光二极管堆叠侧泵浦的大孔径激光放大器，其包括：多个泵浦光源组件; 激光介质，其形状为棱镜，其中棱柱体的上表面和下表面均为多边形，并且多边形的边缘数量与泵浦光源组件的数量相同; 和冷却装置。 激光介质的每一侧设置有泵浦光源组件; 由半导体激光二极管叠层发出的泵浦光由耦合管耦合的光束整形元件成形，然后从激光介质的侧面进行侧向泵浦，从而放大从上表面入射的激光束 的激光介质的棱镜。

公开(公告)号：US09484707B2

公开(公告)日：2016-11-01

申请号：US14144408

申请日：2013-12-30

Applicant: nLight Photonics Corporation

Inventor： Jay Small ,  Ken Gross ,  Shuang Li

IPC: G02B6/028 ,  H01S3/094 ,  H01S3/0941

CPC classification number: H01S3/094053 ,  G02B6/0288 ,  H01S3/0941

Abstract: Optical fibers that provide stable output beam sizes have core refractive indices that decrease non-monotonically from a core center to a core/cladding interface. A maximum refractive index of the core is situated at a radius of between about ½ and ¾ of the core radius so that a core center has a depressed refractive index. Such fibers are included in diode pumped solid state lasers to deliver pump laser power to a laser medium.

Abstract translation: 提供稳定输出光束尺寸的光纤具有从核心中心到芯/包层界面非单调减小的纤芯折射率。 芯的最大折射率位于芯半径的约1/2和¾之间的半径处，使得芯中心具有凹陷的折射率。 这种光纤被包括在二极管泵浦固态激光器中，以将激光功率提供给激光介质。

公开(公告)号：US20160315440A1

公开(公告)日：2016-10-27

申请号：US13701703

申请日：2011-06-01

Applicant: Young Geun HAN ,  Ryun Kyung KIM ,  Sang Oh PARK ,  Oh Jang KWON ,  Su Ho CHU

Inventor： Young Geun HAN ,  Ryun Kyung KIM ,  Sang Oh PARK ,  Oh Jang KWON ,  Su Ho CHU

IPC: H01S3/067 ,  H01S3/0941 ,  H01S3/094

CPC classification number: H01S3/06791 ,  H01S3/0675 ,  H01S3/0809 ,  H01S3/094015 ,  H01S3/094019 ,  H01S3/094042 ,  H01S3/094065 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/10084 ,  H01S3/1608 ,  H01S3/2375 ,  H01S5/12 ,  H01S5/141 ,  H01S5/146

Abstract: A laser system according to an embodiment of the present invention includes an oscillation unit to generate a laser output, a connection unit to connect the oscillation unit with an optical fiber loop, an amplifying unit to amplify the laser output on the optical fiber loop, a conversion unit disposed on the optical fiber loop to convert pulsed wave laser output into continuous wave laser output, and an output unit disposed between the connection unit and the conversion unit to split a part of the laser output toward the conversion unit. The system for generating a high output pulsed wave laser and converting the pulsed wave laser into a continuous wave laser may be implemented in a simple structure and small size with high stability and high reproducibility. In addition, a high output laser may be obtained. Also, since conversion from the pulsed wave into the continuous wave is easy, both of the high output pulsed wave and the high output continuous wave may be obtained as necessary.

Abstract translation: 根据本发明实施例的激光系统包括产生激光输出的振荡单元，连接振荡单元与光纤回路的连接单元，放大光纤回路上的激光输出的放大单元， 转换单元，设置在光纤回路上以将脉冲波激光输出转换为连续波激光输出;以及输出单元，设置在连接单元和转换单元之间，以将激光输出的一部分朝向转换单元分裂。 用于产生高输出脉冲波激光并将脉冲波激光转换为连续波激光的系统可以以简单的结构和小尺寸实现，具有高稳定性和高再现性。 此外，可以获得高输出激光。 此外，由于从脉冲波向连续波的转换容易，所以可以根据需要获得高输出脉冲波和高输出连续波。

公开(公告)号：US20160301183A1

公开(公告)日：2016-10-13

申请号：US13945537

申请日：2013-07-18

Applicant: Cubic Corporation

Inventor： Tony Maryfield ,  Anand Hariharan ,  David Robinson

IPC: H01S3/094 ,  H01S3/0941 ,  G01S17/32 ,  H01S3/067

CPC classification number: H01S3/094003 ,  F41G1/473 ,  F41G3/06 ,  G01S7/4814 ,  G01S7/4818 ,  G01S17/08 ,  G01S17/32 ,  H01S3/0092 ,  H01S3/06716 ,  H01S3/06754 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/2375 ,  H01S5/06216 ,  H01S5/0657 ,  H01S2301/08

Abstract: Embodiments of the present invention are directed toward a low-power, high quality compact laser source. Embodiments include an optical combiner combining the outputs of a pump laser and a Fabry-Perot seed laser into a fiber amplifier. The fiber amplifier can comprise, for example, erbium-doped fiber. Embodiments can include pulsed and continuous wave lasers, depending on desired functionality.

Abstract translation: 本发明的实施例涉及一种低功率，高质量的紧凑型激光源。 实施例包括将泵浦激光器和法布里 - 珀罗种子激光器的输出组合成光纤放大器的光学组合器。 光纤放大器可以包括例如掺铒光纤。 取决于所需的功能，实施例可以包括脉冲和连续波激光器。