公开(公告)号：US08830568B2

公开(公告)日：2014-09-09

申请号：US13085411

申请日：2011-04-12

Applicant: Matthias P. Savage-Leuchs ,  Christian E. Dilley

Inventor： Matthias P. Savage-Leuchs ,  Christian E. Dilley

IPC: H01S3/091

CPC classification number: H01S3/094007 ,  G02B6/02009 ,  H01S3/0672 ,  H01S3/06733 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094011

Abstract: In some embodiments, the present invention provides an apparatus, method and use for improving and merging two existing techniques (core pumping and cladding pumping) to enable high-power fiber-laser systems having excellent beam quality while using large-core (LMA) step-index gain fibers at very high optical power, wherein the core pumping includes mixing a laser seed optical signal (having a signal wavelength) with optical core-pump light (having a core-pump wavelength that is near the signal wavelength) in a manner that matches the modes of the seed optical signal and the pump light. The combined core light is mode matched to the LMA gain fiber. The core-pump light is substantially all absorbed within a short distance from the entry end of the gain fiber and provides a strong pre-amplified signal for later cladding-pumped amplification. In some embodiments, the signal wavelength and the core-pump wavelength are within a single multiplet of a rare-earth dopant.

Abstract translation: 在一些实施例中，本发明提供了一种用于改进和合并两种现有技术（核心泵送和包层泵浦）的装置，方法和用途，以便能够在使用大型（LMA）步骤的同时实现具有优良波束质量的大功率光纤激光系统 - 以非常高的光功率指示增益光纤，其中，芯泵送包括以一种方式将激光种子光信号（具有信号波长）与光核心泵浦光（具有接近信号波长的核心 - 泵浦波长）混合 匹配种子光信号和泵浦光的模式。 组合核心光与LMA增益光纤匹配。 核心泵浦光基本上全部被吸收在与增益光纤的入口端相距很短的距离内，并提供强的预放大信号，用于以后的包层泵浦放大。 在一些实施例中，信号波长和核心 - 泵浦波长在稀土掺杂物的单个倍数内。

公开(公告)号：US20110249320A1

公开(公告)日：2011-10-13

申请号：US13085411

申请日：2011-04-12

Applicant: Matthias P. Savage-Leuchs ,  Christian E. Dilley

Inventor： Matthias P. Savage-Leuchs ,  Christian E. Dilley

IPC: H01S3/067

CPC classification number: H01S3/094007 ,  G02B6/02009 ,  H01S3/0672 ,  H01S3/06733 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094011

Abstract: In some embodiments, the present invention provides an apparatus, method and use for improving and merging two existing techniques (core pumping and cladding pumping) to enable high-power fiber-laser systems having excellent beam quality while using large-core (LMA) step-index gain fibers at very high optical power, wherein the core pumping includes mixing a laser seed optical signal (having a signal wavelength) with optical core-pump light (having a core-pump wavelength that is near the signal wavelength) in a manner that matches the modes of the seed optical signal and the pump light. The combined core light is mode matched to the LMA gain fiber. The core-pump light is substantially all absorbed within a short distance from the entry end of the gain fiber and provides a strong pre-amplified signal for later cladding-pumped amplification. In some embodiments, the signal wavelength and the core-pump wavelength are within a single multiplet of a rare-earth dopant.

Abstract translation: 在一些实施例中，本发明提供了一种用于改进和合并两种现有技术（核心泵浦和包层泵浦）的装置，方法和用途，以便能够在使用大型（LMA）步骤的同时实现具有优良波束质量的大功率光纤激光系统 - 以非常高的光功率指示增益光纤，其中，芯泵送包括以一种方式将激光种子光信号（具有信号波长）与光核心泵浦光（具有接近信号波长的核心 - 泵浦波长）混合 匹配种子光信号和泵浦光的模式。 组合核心光与LMA增益光纤匹配。 核心泵浦光基本上全部被吸收在与增益光纤的入口端相距很短的距离内，并提供强的预放大信号，用于以后的包层泵浦放大。 在一些实施例中，信号波长和核心 - 泵浦波长在稀土掺杂物的单个倍数内。

公开(公告)号：US20110122895A1

公开(公告)日：2011-05-26

申请号：US12952190

申请日：2010-11-22

Applicant: Matthias P. Savage-Leuchs ,  Christian E. Dilley ,  Charles A. Lemaire

Inventor： Matthias P. Savage-Leuchs ,  Christian E. Dilley ,  Charles A. Lemaire

IPC: H01S3/11

CPC classification number: H01S3/06758 ,  B60Q1/0076 ,  H01S3/06704 ,  H01S3/06712 ,  H01S3/06716 ,  H01S3/0675 ,  H01S3/06791 ,  H01S3/094003 ,  H01S3/094011 ,  H01S3/094053 ,  H01S3/0941 ,  H01S3/1022 ,  H01S3/113 ,  H01S3/115 ,  H01S3/127 ,  H01S3/2316 ,  H01S5/146 ,  H01S2301/03

Abstract: An apparatus, method and system that uses a Q-switched laser or a Q-seed source for a seed pulse signal having a controlled high-dynamic-range amplitude that avoids and/or compensates for pulse steepening in high-gain optical-fiber and/or optical-rod amplification of optical pulses. Optionally, the optical output is used for LIDAR or illumination purposes (e.g., for image acquisition). In some embodiments, well-controlled pulse shapes are obtained having a wide dynamic range, long duration, and not-too-narrow linewidth. In some embodiments, upon the opening of a Q-switch in an optical cavity having a gain medium, the amplification builds relatively slowly, wherein each round trip through the gain medium increases the amplitude of the optical pulse. Other embodiments use quasi-Q-switch devices or a plurality of amplitude modulators to obtain Q-seed pulses. These configurations provide optical pulses having wide dynamic ranges that ameliorate problems of pulse steepening, non-linear spectral broadening and the like in very-high-power MOPA devices.

Abstract translation: 一种使用Q开关激光器或Q种子源用于具有受控的高动态范围幅度的种子脉冲信号的装置，方法和系统，其避免和/或补偿高增益光纤中的脉冲陡峭，以及 /或光学脉冲的光棒放大。 可选地，光输出用于LIDAR或照明目的（例如，用于图像采集）。 在一些实施例中，获得具有宽动态范围，长持续时间和不太窄线宽的良好控制的脉冲形状。 在一些实施例中，在具有增益介质的光学腔中打开Q开关后，放大相对缓慢地建立，其中通过增益介质的每次往返都增加了光脉冲的幅度。 其他实施例使用准Q开关器件或多个幅度调制器来获得Q-种子脉冲。 这些配置提供具有宽动态范围的光脉冲，其可改善非常高功率的MOPA器件中的脉冲陡峭度，非线性光谱变宽等问题。

公开(公告)号：US08934509B2

公开(公告)日：2015-01-13

申请号：US12952190

申请日：2010-11-22

Applicant: Matthias P. Savage-Leuchs ,  Christian E. Dilley ,  Charles A. Lemaire

Inventor： Matthias P. Savage-Leuchs ,  Christian E. Dilley ,  Charles A. Lemaire

IPC: H01S3/11 ,  H01S3/067 ,  H01S3/102 ,  H01S5/14 ,  H01S3/23 ,  H01S3/115 ,  H01S3/127 ,  H01S3/113 ,  H01S3/094

CPC classification number: H01S3/06758 ,  B60Q1/0076 ,  H01S3/06704 ,  H01S3/06712 ,  H01S3/06716 ,  H01S3/0675 ,  H01S3/06791 ,  H01S3/094003 ,  H01S3/094011 ,  H01S3/094053 ,  H01S3/0941 ,  H01S3/1022 ,  H01S3/113 ,  H01S3/115 ,  H01S3/127 ,  H01S3/2316 ,  H01S5/146 ,  H01S2301/03

Abstract: An apparatus, method and system that uses a Q-switched laser or a Q-seed source for a seed pulse signal having a controlled high-dynamic-range amplitude that avoids and/or compensates for pulse steepening in high-gain optical-fiber and/or optical-rod amplification of optical pulses. Optionally, the optical output is used for LIDAR or illumination purposes (e.g., for image acquisition). In some embodiments, well-controlled pulse shapes are obtained having a wide dynamic range, long duration, and not-too-narrow linewidth. In some embodiments, upon the opening of a Q-switch in an optical cavity having a gain medium, the amplification builds relatively slowly, wherein each round trip through the gain medium increases the amplitude of the optical pulse. Other embodiments use quasi-Q-switch devices or a plurality of amplitude modulators to obtain Q-seed pulses. These configurations provide optical pulses having wide dynamic ranges that ameliorate problems of pulse steepening, non-linear spectral broadening and the like in very-high-power MOPA devices.

Abstract translation: 一种使用Q开关激光器或Q种子源用于具有受控的高动态范围幅度的种子脉冲信号的装置，方法和系统，其避免和/或补偿高增益光纤中的脉冲陡峭，以及 /或光学脉冲的光棒放大。 可选地，光输出用于LIDAR或照明目的（例如，用于图像采集）。 在一些实施例中，获得具有宽动态范围，长持续时间和不太窄线宽的良好控制的脉冲形状。 在一些实施例中，在具有增益介质的光学腔中打开Q开关后，放大相对缓慢地建立，其中通过增益介质的每次往返都增加了光脉冲的幅度。 其他实施例使用准Q开关器件或多个幅度调制器来获得Q-种子脉冲。 这些配置提供具有宽动态范围的光脉冲，其可改善非常高功率的MOPA器件中的脉冲陡峭度，非线性光谱变宽等问题。

公开(公告)号：US20110249321A1

公开(公告)日：2011-10-13

申请号：US13085462

申请日：2011-04-12

Applicant: Matthias P. Savage-Leuchs ,  Christian E. Dilley

Inventor： Matthias P. Savage-Leuchs ,  Christian E. Dilley

IPC: H01S3/067

CPC classification number: H01S3/094007 ,  G02B6/02009 ,  H01S3/0672 ,  H01S3/06733 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094011

Abstract: A method and apparatus for mode-matching double-clad fibers. In some embodiments, a first fiber section that has a first core, wherein the first core has a first core diameter connects to a mode-field adaptor, wherein the mode-field adaptor includes a first portion having a central volume that has a substantially constant index-of-refraction radial profile and a diameter larger than the first core diameter, and a second portion that has a graded-index (GRIN) central volume, wherein the GRIN central volume has a central axis and a graded index-of-refraction radial profile having an index that gradually decreases at larger distances from its central axis and a length selected to focus light into the core of a second fiber wherein the second core has a diameter that is larger than the first core diameter, and wherein the second fiber section is double clad. Some embodiments are polarized.

Abstract translation: 一种用于模式匹配双包层光纤的方法和装置。 在一些实施例中，具有第一芯的第一纤维部分，其中所述第一芯具有第一芯直径连接到模场适配器，其中所述模场适配器包括具有基本恒定的中心体积的第一部分 折射率径向轮廓和大于第一纤芯直径的直径，以及具有渐变折射率（GRIN）中心体积的第二部分，其中GRIN中心体积具有中心轴和渐变折射率 径向轮廓具有从其中心轴线较大距离处逐渐减小的指数，以及被选择用于将光聚焦到第二纤维的芯中的长度，其中第二芯具有大于第一纤芯直径的直径，并且其中第二纤维 部分是双层包层。 一些实施例是极化的。

公开(公告)号：US08767286B2

公开(公告)日：2014-07-01

申请号：US13085462

申请日：2011-04-12

Applicant: Matthias P. Savage-Leuchs ,  Christian E. Dilley

Inventor： Matthias P. Savage-Leuchs ,  Christian E. Dilley

IPC: H01S3/067

CPC classification number: H01S3/094007 ,  G02B6/02009 ,  H01S3/0672 ,  H01S3/06733 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094011

Abstract: A method and apparatus for mode-matching double-clad fibers. In some embodiments, a first fiber section that has a first core, wherein the first core has a first core diameter connects to a mode-field adaptor, wherein the mode-field adaptor includes a first portion having a central volume that has a substantially constant index-of-refraction radial profile and a diameter larger than the first core diameter, and a second portion that has a graded-index (GRIN) central volume, wherein the GRIN central volume has a central axis and a graded index-of-refraction radial profile having an index that gradually decreases at larger distances from its central axis and a length selected to focus light into the core of a second fiber wherein the second core has a diameter that is larger than the first core diameter, and wherein the second fiber section is double clad. Some embodiments are polarized.

Abstract translation: 一种用于模式匹配双包层光纤的方法和装置。 在一些实施例中，具有第一芯的第一纤维部分，其中所述第一芯具有第一芯直径连接到模场适配器，其中所述模场适配器包括具有基本恒定的中心体积的第一部分 折射率径向轮廓和大于第一纤芯直径的直径，以及具有渐变折射率（GRIN）中心体积的第二部分，其中GRIN中心体积具有中心轴和渐变折射率 径向轮廓具有从其中心轴线较大距离处逐渐减小的指数，以及被选择用于将光聚焦到第二纤维的芯中的长度，其中第二芯具有大于第一纤芯直径的直径，并且其中第二纤维 部分是双层包层。 一些实施例是极化的。