Thermo-optically driven adaptive mirror based on thermal expansion:: preparation and resolution

被引：14
|
作者：
Reinert, F [1 ]
Lüthy, W [1 ]
机构：
[1] Univ Bern, Inst Appl Phys, CH-3012 Bern, Switzerland
来源：
OPTICS EXPRESS | 2005年 / 13卷 / 26期
关键词：
D O I：
10.1364/OPEX.13.010749
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A thermo-optically driven adaptive mirror is presented. It is based on the thermal expansion of a thin film heated with a light pattern. We describe a procedure for the preparation of a silicon elastomer with a high-quality optical surface. This material, Sylgard 184, has a high linear thermal expansion coefficient of 3.1 center dot 10(- 4) K-1. Surface modulations are recorded in an interferometer. Modulations of 350 nm result at an intensity of 370 mW/cm(2). The resolution is measured with a line pattern. The contrast drops to 30 % at 1.6 line pairs per millimeter (lp/ mm). (c) 2005 Optical Society of America.
引用
收藏
页码：10749 / 10753
页数：5
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