公开(公告)号：US07050474B2

公开(公告)日：2006-05-23

申请号：US10656343

申请日：2003-09-05

申请人： Bing Shan ,  Chun Wang ,  Zenghu Chang

发明人： Bing Shan ,  Chun Wang ,  Zenghu Chang

IPC分类号： H01S3/091

CPC分类号： H01S3/2325 ,  H01S3/005 ,  H01S3/094038 ,  H01S3/1625 ,  H01S3/1636

摘要： The present invention describes a technique for achieving high peak power output in a laser employing single-stage, multi-pass amplification. High gain is achieved by employing a very small “seed” beam diameter in gain medium, and maintaining the small beam diameter for multiple high-gain pre-amplification passes through a pumped gain medium, then leading the beam out of the amplifier cavity, changing the beam diameter and sending it back to the amplifier cavity for additional, high-power amplification passes through the gain medium. In these power amplification passes, the beam diameter in gain medium is increased and carefully matched to the pump laser's beam diameter for high efficiency extraction of energy from the pumped gain medium. A method of “grooming” the beam by means of a far-field spatial filter in the process of changing the beam size within the single-stage amplifier is also described.

摘要翻译： 本发明描述了在采用单级多通道放大的激光器中实现高峰值功率输出的技术。 通过在增益介质中采用非常小的“种子”光束直径来实现高增益，并且通过泵浦增益介质保持多个高增益预放大通过的小光束直径，然后将光束导出放大器腔，改变 光束直径并将其发送回放大器腔，用于额外的高功率放大，通过增益介质。 在这些功率放大通路中，增益介质中的光束直径增加并仔细地匹配于泵激光器的光束直径，用于从泵浦增益介质中高效提取能量。 还描述了在改变单级放大器内的光束尺寸的过程中借助于远场空间滤波器“修整”光束的方法。

公开(公告)号：US20050053105A1

公开(公告)日：2005-03-10

申请号：US10656343

申请日：2003-09-05

申请人： Bing Shan ,  Chun Wang ,  Zenghu Chang

发明人： Bing Shan ,  Chun Wang ,  Zenghu Chang

IPC分类号： H01S3/00 ,  H01S3/094 ,  H01S3/10 ,  H01S3/16 ,  H01S3/23

CPC分类号： H01S3/2325 ,  H01S3/005 ,  H01S3/094038 ,  H01S3/1625 ,  H01S3/1636

摘要： The present invention describes a technique for achieving high peak power output in a laser employing single-stage, multi-pass amplification. High gain is achieved by employing a very small “seed” beam diameter in gain medium, and maintaining the small beam diameter for multiple high-gain pre-amplification passes through a pumped gain medium, then leading the beam out of the amplifier cavity, changing the beam diameter and sending it back to the amplifier cavity for additional, high-power amplification passes through the gain medium. In these power amplification passes, the beam diameter in gain medium is increased and carefully matched to the pump laser's beam diameter for high efficiency extraction of energy from the pumped gain medium. A method of “grooming” the beam by means of a far-field spatial filter in the process of changing the beam size within the single-stage amplifier is also described.

摘要翻译： 本发明描述了在采用单级多通道放大的激光器中实现高峰值功率输出的技术。 通过在增益介质中采用非常小的“种子”光束直径来实现高增益，并且通过泵浦增益介质保持多个高增益预放大通过的小光束直径，然后将光束导出放大器腔，改变 光束直径并将其发送回放大器腔，用于额外的高功率放大，通过增益介质。 在这些功率放大通路中，增益介质中的光束直径增加并仔细地匹配于泵激光器的光束直径，用于从泵浦增益介质中高效提取能量。 还描述了在改变单级放大器内的光束尺寸的过程中借助于远场空间滤波器“修整”光束的方法。