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首页> 外文期刊>Applied physics. B, Lasers and optics >Thermo-optically driven adaptive mirror for laser applications
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Thermo-optically driven adaptive mirror for laser applications

机译：用于激光应用的热光驱动自适应镜

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摘要

An adaptive mirror is investigated that is based on the deformation of the reflective surface due to thermal expansion of an underlying material that can be locally heated with an external light source. The mirror is made from a glass plate coated with a 1-mm-thick layer of a material with a large thermal expansion coefficient that was finally sputter coated with a thin gold film. The adaptive mirror is thermo-optically heated with an incandescent lamp. To generate the desired temperature pattern an aperture mask is used. The deformation of the adaptive mirror is measured with a Michelson interferometer. It is shown that the spatial resolution and amplitude of the deformation are sufficient for the application as an adaptive mirror. As a possible application the suitability of this mirror type as part of a laser resonator to generate a super-Gaussian mode is discussed.
机译：研究了一种自适应反射镜，该反射镜基于反射性表面的变形，该变形是由于底层材料的热膨胀引起的，该材料可以通过外部光源进行局部加热。镜子是由一块玻璃板制成的，该玻璃板上涂有一层1毫米厚的热膨胀系数大的材料，最后将其溅射镀上一层金薄膜。自适应镜用白炽灯进行热光加热。为了产生期望的温度图案，使用孔径掩模。自适应镜的变形是用迈克尔逊干涉仪测量的。结果表明，空间分辨率和变形幅度足以用作自适应镜。作为一种可能的应用，讨论了这种反射镜类型作为激光谐振器的一部分产生超高斯模式的适用性。

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