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Self-aligning intracavity raman laser

机译:自对准腔内拉曼激光器

摘要

Intracavity Raman lasers comprising a pump resonator and a Raman resonator that eliminates alignment problems associated with multi- mirror intracavity lasers. The pump resonators include a laser rod and a pump source. In one embodiment, a first retroreflector is disposed at one end of the pump resonator, and an output mirror is disposed at an opposite end thereof. A Q-switch, a dichroic mirror, and a prism are disposed between the laser rod and the output mirror. The pump resonator radiates pump energy at a first wavelength (1.06 &mgr;m) between the first retroreflector and the output mirror. The Raman resonator includes a Raman gas cell having first and second lenses disposed on opposite ends thereof for focusing laser energy into the Raman cell, and a second retroreflector that forms one end of the Raman resonator. The output mirror forms an opposite end of the cell, and the dichroic mirror and the prism are disposed between the second retroreflector and the first lens. The Raman resonator radiates Raman laser energy at a second wavelength (1. 54 &mgr;m) between the second retroreflector and the output mirror. A second embodiment eliminates the second retroreflector and dichroic mirror and moves the position of the Q-switch to a point between the retroreflector and the laser rod. The present lasers are extremely insensitive to misalignment and have eyesafe output energy and acceptable beam divergence. The present lasers, in a production design, may be mechanically toleranced so that no optical alignment is necessary. Due to their self-aligning nature, the present lasers have fewer components and operate at higher pulse repetition frequencies than conventional multi- mirror intracavity lasers.
机译:腔内拉曼激光器包括泵浦谐振器和拉曼谐振器,可消除与多镜腔内激光器相关的对准问题。泵浦谐振器包括激光棒和泵浦源。在一个实施例中,第一后向反射器设置在泵谐振器的一端,而输出镜设置在其相对端。 Q开关,二向色镜和棱镜设置在激光棒和输出镜之间。泵浦谐振器在第一回射器和输出镜之间以第一波长(1.06μm)辐射泵浦能量。拉曼共振器包括拉曼气室,该拉曼气室具有布置在其相对两端以将激光能量聚焦到拉曼池中的第一透镜和第二透镜,以及形成拉曼共振器的一端的第二回射器。输出镜形成单元的相对端,并且二向色镜和棱镜设置在第二回射器和第一透镜之间。拉曼共振器在第二后向反射器和输出镜之间以第二波长(1.54μm)辐射拉曼激光能量。第二实施例消除了第二后向反射器和二向色镜,并将Q开关的位置移动到后向反射器和激光棒之间的位置。本激光器对失准极为不敏感,并且具有人眼安全的输出能量和可接受的光束发散度。在生产设计中,本激光器可以是机械公差的,使得不需要光学对准。由于它们的自对准特性,与常规的多镜腔内激光器相比,本激光器具有更少的组件并且以更高的脉冲重复频率工作。

著录项

  • 公开/公告号IL106615A

    专利类型

  • 公开/公告日1996-09-12

    原文格式PDF

  • 申请/专利权人 HUGHES AIRCRAFT COMPANY;

    申请/专利号IL19930106615

  • 发明设计人

    申请日1993-08-08

  • 分类号H01S3/30;

  • 国家 IL

  • 入库时间 2022-08-22 03:53:46

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