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Micromachined deformable mirrors for laser wavefront control.

机译：用于激光波前控制的微加工可变形反射镜。

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摘要

High-power lasers are used today for a wide variety of commercial and scientific applications from laser machining to gravitational-wave detection. Many high power lasers typically suffer from reduced beam quality due to thermally induced aberrations. Results are presented showing the shape and magnitude of thermally induced aberrations in a transmissive optic and in a slab laser amplifier. Calculations are performed showing the effect of these aberrations on the power in the lowest-order Hermite-Gauss mode. Experimental results showing 50% power loss due to thermally induced aberrations in a transmissive optic is presented. Several different types of electrostatically actuated micromachined deformable mirrors that were developed to compensate for laser aberrations. One such mirror was used to compensate the aberrations induced on laser wavefront by a slab laser amplifier. The deformable mirror was able to remove the aberrations such that the power in the lowest-order Hermite-Gauss mode increased from 31% to 89%.
机译：如今，大功率激光器已用于从激光加工到重力波检测的各种商业和科学应用中。由于热引起的像差，许多高功率激光器通常遭受光束质量下降的困扰。给出的结果显示了透射光学器件和平板激光放大器中热像差的形状和大小。进行的计算显示了这些像差在最低阶Hermite-Gauss模式下对功率的影响。实验结果表明，透射光学器件中由于热像差导致的功率损耗为50％。开发了几种不同类型的静电致动微机械可变形反射镜，以补偿激光像差。一个这样的反射镜用于补偿平板激光放大器在激光波前引起的像差。可变形反射镜能够消除像差，从而使最低阶厄米-高斯模式下的光焦度从31％增加到89％。

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  • 作者

    Mansell, Justin Dennis.;

  • 作者单位

    Stanford University.;

  • 授予单位 Stanford University.;
  • 学科 Engineering Electronics and Electrical.; Physics Optics.
  • 学位 Ph.D.
  • 年度 2002
  • 页码 86 p.
  • 总页数 86
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;光学;
  • 关键词

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