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1. 发明申请

WO2012047218A1 HIGH POWER NEODYMIUM FIBER LASERS AND AMPLIFIERS 审中-公开
标题翻译：高功率光纤激光器和放大器
公开(公告)号：WO2012047218A1
公开(公告)日：2012-04-12
申请号：PCT/US2010/051743
申请日：2010-10-07
申请人： IPG PHOTONICS CORPORATION , GASPONTSEV, Valentin , ZAYTSEV, Illia , VYATKIN, Mikhail
发明人： GASPONTSEV, Valentin , ZAYTSEV, Illia , VYATKIN, Mikhail
IPC分类号： H01S3/067 , H01S3/05
CPC分类号： H01S3/1611 , H01S3/0092 , H01S3/06745 , H01S3/06758 , H01S3/094007 , H01S3/094011 , H01S3/094019 , H01S3/094042 , H01S3/094061 , H01S3/09408 , H01S3/10023 , H01S3/1618
摘要： A fiber block is configured with a fiber block including a Nd-doped active fiber and a pump-light delivery fiber which has a stretch extending along the active fiber in a side-to-side configuration so as to lunch pump light into the Nd-doped core of the active fiber. The core of the active fiber is surrounded by at least one or more claddings which, like the core, have a double bottleneck cross-section with a relatively large-area central region and relatively small input and output regions. The pump light delivery fiber is structured to have a substantially dumbbell cross-section with a relatively small-area central region coextending with the central region of the active fibers. The active fiber is dimensioned so that the overall length of the active fiber is configured to provide for the maximal amplification of the laser signal in a 900 nm range while limiting amplification in the 1060 nm range to the preset threshold. The fiber block is further configured so as to have the major fraction of the unabsorbed light, supported in the relatively large-area output end region of the passive fiber, be further used for pumping a neighboring fiber block.
摘要翻译：纤维块由具有Nd掺杂有源纤维和泵浦光输送纤维的纤维块构成，所述纤维块具有沿着有源纤维沿着侧面配置延伸的拉伸，以便将泵浦光中的Nd- 有源光纤的掺杂核心。有源光纤的核心被至少一个或多个包层围绕，像芯一样，具有相对较大面积的中心区域和相对小的输入和输出区域的双瓶颈截面。泵浦光输送纤维被构造成具有基本上哑铃的横截面，其具有与活性纤维的中心区域共同延伸的相对小的区域中心区域。有源光纤的尺寸设计使得有源光纤的总长度被配置为提供在900nm范围内的激光信号的最大放大率，同时将1060nm范围内的放大限制到预设阈值。纤维块被进一步配置成具有支撑在无源光纤的相对大面积的输出端区域中的未被吸收的光的主要部分，进一步用于泵送相邻的光纤块。

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