公开(公告)号：US20090161700A1

公开(公告)日：2009-06-25

申请号：US12096056

申请日：2006-12-08

申请人： Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Hiroyuki Furuya ,  Akira Shirakawa ,  Ken-ichi Ueda

发明人： Kiminori Mizuuchi ,  Kazuhisa Yamamoto ,  Hiroyuki Furuya ,  Akira Shirakawa ,  Ken-ichi Ueda

IPC分类号： H01S3/30

CPC分类号： H01S3/0675

摘要： A fiber laser includes: a solid laser fiber doped with a rare earth element; a first grating fiber provided at one end portion of both ends along an optical axis direction of the solid laser fiber; and a first reflective element provided at the other end portion of the solid laser fiber. The first and second reflective elements constitute a resonator structure for the solid laser fiber; the first grating fiber Bragg-reflects only two polarizations of a first polarization having a first wavelength, and a second polarization having a second wavelength different from the first wavelength and being mutually orthogonal with the first polarization in a polarization direction; and at least one reflection wavelength of light which is reflected at the first reflective element and either one wavelength of the two polarizations which are Bragg-reflected at the first grating fiber coincide with each other.

摘要翻译： 光纤激光器包括：掺杂有稀土元素的固体激光光纤; 第一光栅光纤，沿着固体激光光纤的光轴方向设置在两端的一端部; 以及设置在固体激光光纤的另一端部的第一反射元件。 第一和第二反射元件构成用于固体激光光纤的谐振器结构; 第一光栅光纤布拉格反射仅具有第一波长的第一偏振的两个偏振和具有与第一波长不同的第二波长并且在偏振方向上与第一偏振相互正交的第二偏振; 并且在第一光栅光纤处被布拉格反射的在第一反射元件处反射的光的至少一个反射波长和两个偏振的一个波长彼此一致。

公开(公告)号：US07372877B2

公开(公告)日：2008-05-13

申请号：US10518234

申请日：2003-06-20

申请人： Akira Shirakawa ,  Kenichi Ueda ,  Hirofumi Kan ,  Hirofumi Miyajima

发明人： Akira Shirakawa ,  Kenichi Ueda ,  Hirofumi Kan ,  Hirofumi Miyajima

IPC分类号： H01S3/30

CPC分类号： H01S3/2383 ,  H01S3/067 ,  H01S3/06708

摘要： Fiber laser unit 1 comprises a plurality of fiber lasers 2 and 3 that generate laser beams by exciting a laser active substance inside cores 2a and 3a by exciting light, propagate the laser beams inside the cores 2a and 3a, and output the laser beams from the end portions 2c and 3c, wherein the respective fiber lasers 2 and 3 have resonators 4 and 5 that reflect the laser beams on both ends 2b, 2c, 3b, and 3c thereof and have a structure in which a part of the cores 2a and 3a is reduced in diameter, the diameter reduced portions of the cores 2a and 3a are made proximal to each other, injection synchronization is carried out inside the resonators 4 and 5 by laser beams leaked from the cores 2a and 3a, and a loss is applied to the port of either one of the fiber lasers 2 and 3. According to this fiber laser unit 1, by a simple structure in which the cores 2a and 3a are made proximal to each other and injection synchronization is carried out by using laser beams leaked from the cores 2a and 3a, coherent addition of lasers with extremely high addition efficiency is realized.

摘要翻译： 光纤激光单元1包括多个光纤激光器2和3，其通过激发光激发芯2A和3a内的激光活性物质来产生激光束，并将激光束传播到芯2a和3a内，并输出 来自端部2c和3c的激光束，其中各个光纤激光器2和3具有在两端2b，2c，3b和3c的反射激光束的谐振器4和5，并且具有结构 其中芯部2a和3a的一部分直径减小，芯部2a和3a的直径减小的部分彼此靠近，通过激光束在谐振器4和5内部进行注射同步 从芯部2a和3a泄漏，并且损耗被施加到光纤激光器2和3中的任一个的端口。 根据该光纤激光器单元1，通过使芯2a和3a彼此靠近并且通过使用从芯2a和3a泄漏的激光束进行注射同步的简单结构，将相干添加 实现了极高的附加效率的激光器。

公开(公告)号：US20050238065A1

公开(公告)日：2005-10-27

申请号：US10518234

申请日：2003-06-20

申请人： Akira Shirakawa ,  Kenichi Ueda ,  Hirofumi Kan ,  Hirofumi Miyajima

发明人： Akira Shirakawa ,  Kenichi Ueda ,  Hirofumi Kan ,  Hirofumi Miyajima

IPC分类号： G02B6/287 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/082 ,  H01S3/23 ,  H01S3/30

CPC分类号： H01S3/2383 ,  H01S3/067 ,  H01S3/06708

摘要： Fiber laser unit 1 comprises a plurality of fiber lasers 2 and 3 that generate laser beams by exciting a laser active substance inside cores 2a and 3a by exciting light, propagate the laser beams inside the cores 2a and 3a, and output the laser beams from the end portions 2c and 3c, wherein the respective fiber lasers 2 and 3 have resonators 4 and 5 that reflect the laser beams on both ends 2b, 2c, 3b, and 3c thereof and have a structure in which a part of the cores 2a and 3a is reduced in diameter, the diameter reduced portions of the cores 2a and 3a are made proximal to each other, injection synchronization is carried out inside the resonators 4 and 5 by laser beams leaked from the cores 2a and 3a, and a loss is applied to the port of either one of the fiber lasers 2 and 3. According to this fiber laser unit 1, by a simple structure in which the cores 2a and 3a are made proximal to each other and injection synchronization is carried out by using laser beams leaked from the cores 2a and 3a, coherent addition of lasers with extremely high addition efficiency is realized.

摘要翻译： 光纤激光单元1包括多个光纤激光器2和3，其通过激发光激发芯2A和3a内的激光活性物质来产生激光束，并将激光束传播到芯2a和3a内，并输出 来自端部2c和3c的激光束，其中各个光纤激光器2和3具有在两端2b，2c，3b和3c的反射激光束的谐振器4和5，并且具有结构 其中芯部2a和3a的一部分直径减小，芯部2a和3a的直径减小的部分彼此靠近，通过激光束在谐振器4和5内部进行注射同步 从芯部2a和3a泄漏，并且损耗被施加到光纤激光器2和3中的任一个的端口。 根据该光纤激光器单元1，通过使芯2a和3a彼此靠近并且通过使用从芯2a和3a泄漏的激光束进行注射同步的简单结构，将相干添加 实现了极高的附加效率的激光器。