公开(公告)号：JP2011055016A

公开(公告)日：2011-03-17

申请号：JP2010280728

申请日：2010-12-16

Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

Inventor： FERMANN MARTIN E ,  HARTER DONALD J DR

IPC: H01S3/10 ,  G02F1/37 ,  H01S3/06 ,  H01S3/067 ,  H01S3/08 ,  H01S3/094 ,  H01S3/23 ,  H04B10/02 ,  H04B10/18

CPC classification number: H01S3/067 ,  G02F1/37 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/06745 ,  H01S3/06754 ,  H01S3/08022 ,  H01S3/094003 ,  H01S3/235

Abstract: PROBLEM TO BE SOLVED: To generate peak intensity and pulse energy larger than those achieved with a single mode (SM) fiber, by increasing capacity for accumulating energy in an optical fiber amplifier before undesirable non-linearity and gain saturation start. SOLUTION: This optical amplifier includes: a fiber oscillator 10 serving as a laser source, which generates an input beam having a mode close to diffraction limit; a multiple mode fiber amplifier 12; a mode converter 14; and a pump source 20. The mode converter 14 receives an input beam, converts a mode of the input beam to conform to a basic mode of the multiple mode fiber amplifier 12, and generates a mode-converted input beam to be input to the multiple mode fiber amplifier 12. The pump source 20 optically pumps the multiple mode fiber amplifier 12, and generates a strong output beam which is intrinsically amplified by the basic mode. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：为了产生比单模（SM）光纤实现的峰值强度和脉冲能量更大的峰值强度和脉冲能量，通过增加在不期望的非线性和增益饱和开始之前在光纤放大器中累积能量的能力。 解决方案：该光放大器包括：用作激光源的光纤振荡器10，其产生具有接近衍射极限的模式的输入光束; 多模光纤放大器12; 模式转换器14; 模式转换器14接收输入光束，将输入光束的模式转换为符合多模光纤放大器12的基本模式，并生成要输入到多模光纤放大器12的模式转换输入光束 泵浦光源20对多模光纤放大器12进行光泵浦，并产生本质上由基本模式放大的强输出光束。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2009205174A

公开(公告)日：2009-09-10

申请号：JP2009142237

申请日：2009-06-15

Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

Inventor： FERMANN MARTIN E ,  HARTER DONALD J DR

IPC: G02B6/02 ,  G02B6/024 ,  G02B6/036 ,  G02B6/44 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/098 ,  H01S3/10

CPC classification number: H01S3/06708 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/094019 ,  H01S3/1118

Abstract: PROBLEM TO BE SOLVED: To provide a fiber increased in polarization maintaining ability while reducing the amount of polarization mode coupling and polarization mode dispersion, and to provide a highly efficient fiber amplifier or laser with a large outer diameter for maintaining polarization so that pump light is guided in an inside clad while a large outside clad ensures the decrease of fiber core inner mode coupling. SOLUTION: The polarization maintaining fiber has a fiber core of multimode having an elliptic cross section; a first clad that surrounds the fiber core; a second clad that surrounds the first clad, and a coating that surrounds the second clad. The first clad has a circular cross section, and the second clad has a noncircular cross section. Single mode light is propagated to the fiber core. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：为了提供在增加偏振维持能力的同时减少偏振模耦合和偏振模色散量的光纤，并且提供具有大外径的高效光纤放大器或激光器以保持偏振，使得 泵浦光在内包层中被引导，而大的外包层确保了纤芯内模耦合的减小。 解决方案：保偏光纤具有具有椭圆截面的多模光纤芯; 围绕纤维芯的第一包层; 围绕第一包层的第二包层和围绕第二包层的涂层。 第一包层具有圆形横截面，第二包层具有非圆形横截面。 单模光线传播到光纤芯。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2009158983A

公开(公告)日：2009-07-16

申请号：JP2009096761

申请日：2009-04-13

Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

Inventor： FERMANN MARTIN E ,  HARTER DONALD J DR

IPC: G02B6/02 ,  H01S3/098 ,  G02B6/024 ,  G02B6/036 ,  G02B6/44 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/10

CPC classification number: H01S3/06708 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/094019 ,  H01S3/1118

Abstract: PROBLEM TO BE SOLVED: To provide a passively mode-locked fiber laser capable of generating linearly chirped high power parabolic pulses. SOLUTION: The passively mode-locked fiber laser for generating short light pulses, comprises a laser resonator having intra-cavity dispersion and a rare-earth-doped gain medium that is provided in the laser resonator, has positive dispersion of intracavity dispersion and operates so as to generate a value of intra-cavity self-phase modulation larger than π. The band width of an intra-cavity light pulse changes during propagation in the laser resonator. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供能够产生线性啁啾大功率抛物线脉冲的被动锁模光纤激光器。 解决方案：用于产生短光脉冲的被动锁模光纤激光器包括具有腔内色散的激光谐振器和设置在激光谐振器中的稀土掺杂增益介质，具有腔内分散的正色散 并且操作以产生大于π的腔内自相位调制值。 腔内光脉冲的带宽在激光谐振器中传播期间改变。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008098676A

公开(公告)日：2008-04-24

申请号：JP2007340748

申请日：2007-12-28

Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

Inventor： SUCHA GREGG D DR ,  FERMANN MARTIN E ,  HARTER DONALD J DR

IPC: H01S3/06

Abstract: PROBLEM TO BE SOLVED: To provide a method of stabilizing a short pulse fiber laser which reduces a timing jitter caused by a variation in environmental condition such as vibration, air disturbance, a change in temperature to a minimum. SOLUTION: The method of stabilizing a short pulse fiber laser has a segregating step which segregates the fiber lasers 210 and 220 from an outside environment, a winding step which winds the fiber lasers 210 and 220 around a fiber spool 280, and an operating step which operates the fiber lasers 210 and 220 while the fiber lasers 210 and 220 are wound around the fiber spool 280. The fiber lasers 210 and 220 are wound around the fiber spool 280 and segregated from the outside environment, and therefore become free of influences of the variation in environmental condition and are stabilized. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种稳定短脉冲光纤激光器的方法，其减少由诸如振动，空气干扰，温度变化等环境条件的变化引起的定时抖动。 解决方案：稳定短脉冲光纤激光器的方法具有将光纤激光器210和220从外部环境分离的偏析步骤，将光纤激光器210和220缠绕在光纤线轴280周围的卷绕步骤，以及 在纤维激光器210和220缠绕在纤维卷轴280周围的同时操作光纤激光器210和220的操作步骤。光纤激光器210和220围绕光纤卷轴280缠绕并与外部环境分离，并因此变得没有 环境变化的影响稳定。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007221173A

公开(公告)日：2007-08-30

申请号：JP2007146684

申请日：2007-06-01

Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

Inventor： FERMANN MARTIN E ,  HARTER DONALD J DR

IPC: H01S3/10 ,  G02F1/37 ,  H01S3/06 ,  H01S3/067 ,  H01S3/08 ,  H01S3/094 ,  H01S3/23 ,  H04B10/02 ,  H04B10/18

CPC classification number: H01S3/067 ,  G02F1/37 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/06745 ,  H01S3/06754 ,  H01S3/08022 ,  H01S3/094003 ,  H01S3/235

Abstract: PROBLEM TO BE SOLVED: To generate a pulse energy having a peak intensity larger than those achieved with a single mode (SM) fiber, by increasing a capacity for accumulating energy in an optical fiber amplifier before starting undesirable non-linearity and gain saturation. SOLUTION: The optical amplifier has a fiber oscillator 10 serving as a laser source, which generates an input beam having a mode close to diffraction limit; a multiple mode fiber amplifier 12; a mode converter 14; and a pump source 20. The mode converter 14 receives an input beam, converts a mode of the input beam so as to conform to a basic mode of the multiple mode fiber amplifier 12, and generates a mode-converted input beam to be inputted to the multiple mode fiber amplifier 12. The pump source 20 optically pumps the multiple mode fiber amplifier 12, and generates a strong output beam which is intrinsically amplified by the basic mode. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了产生具有比单模（SM）光纤实现的峰值强度大的峰值强度的脉冲能量，通过在开始不期望的非线性和增益之前增加在光纤放大器中累积能量的能力 饱和。 解决方案：光放大器具有用作激光源的光纤振荡器10，其产生具有接近衍射极限的模式的输入光束; 多模光纤放大器12; 模式转换器14; 模式转换器14接收输入光束，转换输入光束的模式以符合多模光纤放大器12的基本模式，并生成输入到模式转换的输入光束 多模光纤放大器12.泵浦源20对多模光纤放大器12进行光泵浦，并产生本质上由基本模式放大的强输出光束。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2004088120A

公开(公告)日：2004-03-18

申请号：JP2003354301

申请日：2003-10-14

Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

Inventor： SUCHA GREGG D DR ,  FERMANN MARTIN E ,  HARTER DONALD J DR

IPC: H01S3/10 ,  G01B11/24 ,  G01M11/00 ,  G01P3/80 ,  G01R13/34 ,  G01S7/48 ,  G01S7/484 ,  G01S7/486 ,  G01S17/10 ,  G01S17/50 ,  H01S3/02 ,  H01S3/06 ,  H01S3/07 ,  H01S3/098 ,  H01S3/105 ,  H01S3/13 ,  H01S3/139 ,  H01S3/23

CPC classification number: H01S3/2383 ,  G01P3/806 ,  G01R13/347 ,  G01S7/484 ,  G01S7/486 ,  G01S7/497 ,  G01S17/107 ,  G01S17/50 ,  H01S3/1398

Abstract: PROBLEM TO BE SOLVED: To reduce to the minimum timing jitter caused by variations in environmental condition such as vibrations, disturbance of air, change in temperature. SOLUTION: Two lasers are configured by using the an identical component in an identical container so as to be pumped by the same pump laser while maintaining a state in which the two lasers can be controlled independently. In particular, in the case of a fiber laser, two fibers are wound together around the same shaft (spool). COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2013239738A

公开(公告)日：2013-11-28

申请号：JP2013156607

申请日：2013-07-29

Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

Inventor： FERMANN MARTIN E ,  GALVANAUSKAS ALMANTAS ,  HARTER DONALD J

IPC: G02B6/02 ,  H01S3/10 ,  G02F1/35 ,  G02F1/365 ,  G02F1/37 ,  H01S3/00 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/098 ,  H01S3/109 ,  H01S3/16 ,  H01S3/23 ,  H01S3/30

CPC classification number: H01S3/1115 ,  H01S3/0057 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094019 ,  H01S3/094042 ,  H01S3/109 ,  H01S3/1112 ,  H01S3/1616 ,  H01S3/1618 ,  H01S3/302

Abstract: PROBLEM TO BE SOLVED: To provide a modular, compact and widely wavelength tunable laser system of efficiently generating high-peak ultrashort pulses.SOLUTION: System compactness is ensured by employing efficient fiber amplifiers, directly or indirectly pumped by diode lasers. Peak power handling capability of the fiber amplifiers is expanded by using optimized pulse shapes, as well as dispersively broadened pulses. Dispersive broadening is introduced by dispersive pulse stretching in the presence of self-phase modulation and gain, resulting in formation of high-power parabolic pulses. After amplification, the dispersively stretched pulses are re-compressed nearly to their bandwidth limit by implementing another set of dispersive delay lines. To ensure a wide wavelength tunability of the whole system, Raman-shifting of the compact light sources of ultrashort pulses is implemented in conjunction with frequency conversion in nonlinear optical crystals. Further, positive dispersion optical amplifiers and Raman amplifier fibers are utilized.

Abstract translation: 要解决的问题：提供有效产生高峰超短脉冲的模块化，紧凑且广泛的波长可调谐激光系统。解决方案：通过采用由二极管激光器直接或间接泵浦的高效光纤放大器来确保系统紧凑性。 通过使用优化的脉冲形状以及分散加宽的脉冲来扩展光纤放大器的峰值功率处理能力。 在存在自相位调制和增益的情况下通过色散脉冲拉伸引入分散加宽，从而形成大功率抛物线脉冲。 放大后，通过实施另一组分散延迟线，将分散拉伸的脉冲重新压缩到几乎达到其带宽限制。 为了确保整个系统的宽波长可调性，超短脉冲的紧凑光源的拉曼移位结合非线性光学晶体中的频率转换来实现。 此外，利用正色散光放大器和拉曼放大器光纤。

公开(公告)号：JP2012209597A

公开(公告)日：2012-10-25

申请号：JP2012162766

申请日：2012-07-23

Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

Inventor： FERMANN MARTIN E ,  IMESHEV GENNADY ,  HARTL INGMAR ,  HARTER DONALD J DR

IPC: H01S3/067 ,  G02B6/26 ,  G02F1/01 ,  H01S20060101 ,  H01S3/00 ,  H01S3/10 ,  H01S3/23

CPC classification number: H01S3/06754 ,  H01S3/005 ,  H01S3/0057 ,  H01S3/0085 ,  H01S3/0092 ,  H01S3/06712 ,  H01S3/06725 ,  H01S3/094007 ,  H01S3/10015

Abstract: PROBLEM TO BE SOLVED: To provide a fiber chirped pulse amplification system with high productivity, which has high pulse stretching ratio and compression ratio.SOLUTION: A polarization holding air clad fiber includes: a core region; a material clad region which surrounds a core; an air clad which substantially surrounds the material clad region; and a layer which surrounds the air clad. The polarization holding air clad fiber is provided in which the fiber polarization holding operation is attained by forming stress induced birefringence in an air clad fiber and assembling a stress formation region completely disposed inside the material clad region and completely surrounded by the material clad region.

Abstract translation: 要解决的问题：提供具有高脉冲拉伸比和压缩比的高生产率的光纤啁啾脉冲放大系统。 解决方案：偏振保持空气包层光纤包括：芯区; 围绕芯的材料包覆区域; 基本上围绕材料包层区域的空气包层; 以及围绕空气包层的层。 提供了极化保持空气包层光纤，其中通过在空气包层光纤中形成应力引起的双折射并组装完全设置在材料包覆区域内并被材料包覆区域完全包围的应力形成区域来实现光纤偏振保持操作。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012137796A

公开(公告)日：2012-07-19

申请号：JP2012097555

申请日：2012-04-23

Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

Inventor： FERMANN MARTIN E ,  IMESHEV GENNADY ,  HARTL INGMAR ,  HARTER DONALD J DR

IPC: G02F1/01 ,  G02B6/26 ,  G02F1/35 ,  G02F1/39 ,  H01S20060101 ,  H01S3/00 ,  H01S3/067 ,  H01S3/10 ,  H01S3/23

CPC classification number: H01S3/06754 ,  H01S3/005 ,  H01S3/0057 ,  H01S3/0085 ,  H01S3/0092 ,  H01S3/06712 ,  H01S3/06725 ,  H01S3/094007 ,  H01S3/10015

Abstract: PROBLEM TO BE SOLVED: To provide a fiber chirped pulse amplifier system allowing good productivity with large pulse stretching ratios and compressing ratios.SOLUTION: The chirped pulse amplification system comprises a seed pulse source to generate a short optical pulse, a stretcher to stretch a pulse, and a plurality of chain-wise coupled polarization maintaining fiber sections, where at least one of the polarization maintaining fibers is an amplifier.

Abstract translation: 要解决的问题：提供一种光纤啁啾脉冲放大器系统，其具有大的脉冲拉伸比和压缩比的良好的生产率。 啁啾脉冲放大系统包括种子脉冲源以产生短的光脉冲，拉伸脉冲的拉伸器和多个链式耦合的偏振保持光纤部分，其中至少一个偏振维持 光纤是放大器。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2008122985A

公开(公告)日：2008-05-29

申请号：JP2008003335

申请日：2008-01-10

Applicant: Imra America Inc ,  イムラ アメリカ インコーポレイテッド

Inventor： FERMANN MARTIN E ,  GALVANAUSKAS ALMANTAS DR ,  HARTER DONALD J DR

IPC: G02F1/35 ,  G02F1/37 ,  G02F1/377 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/109 ,  H01S3/16 ,  H01S3/23 ,  H01S3/30

CPC classification number: H01S3/06754 ,  G02F1/37 ,  G02F2001/3542 ,  G02F2001/3548 ,  H01S3/06712 ,  H01S3/06758 ,  H01S3/1603 ,  H01S3/2333 ,  H01S3/302 ,  H01S2301/085

Abstract: PROBLEM TO BE SOLVED: To provide a means which generates a high power optical pulse of femtosecond level. SOLUTION: A high power optical pulse-generating device has a fiber oscillator 10 which generates signal light; an amplifying fiber 11 which has nonlinear phase delay and receives, amplifies and compresses the signal light, the amplifying fiber acting as a Soliton Raman compressor (SRC); and a PPLN 20 (periodic polling LiNbO 3 ) which is a frequency converter which frequency-converts an amplified optical pulse into a high power optical pulse. A dispersion compensating fiber 18 compensates for the dispersion. The optical pulse is reflected by a Faraday rotation mirror (FRM) 19 to form a double-path form. The signal light receives energy from the pump light fed from a pump 16 and is amplified and compressed, and a high power pulse of femtosecond level is obtained, at a frequency at which frequency conversion is performed by the PPLN frequency convertor 20. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供产生飞秒级高功率光脉冲的装置。 解决方案：高功率光脉冲发生装置具有产生信号光的光纤振荡器10; 具有非线性相位延迟并接收，放大和压缩信号光的放大光纤11，作为Soliton拉曼压缩机（SRC）的放大光纤; 以及将放大的光脉冲频率转换为高功率​​光脉冲的频率转换器的PPLN 20（周期轮询LiNbO 3 ）。 色散补偿光纤18补偿色散。 光脉冲由法拉第旋转镜（FRM）19反射以形成双路形式。 信号光从泵16接收来自泵浦光的能量，并被放大和压缩，并且在PPLN变频器20执行频率转换的频率处获得飞秒级的高功率脉冲。 版权所有（C）2008，JPO＆INPIT