Binary gratings for CO2 laser-beam diagnostics

被引：5
|
作者：
HembdSollner, C
Budzinski, C
Tiziani, H
机构：
[1] Institut für Technische Optik, Stuttgart, 70 569
来源：
APPLIED OPTICS | 1996年 / 35卷 / 19期
关键词：
binary optics; gratings; beam diagnostic; modal theory; grating anomalies;
D O I：
10.1364/AO.35.003662
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Propel-ties of binary gratings for beam diagnostics of high-power CO2 lasers are investigated. The layout uses a modal theory that includes absorption oi metallic surfaces by impedance boundary condition. Radiation-resistant gratings were fabricated in copper with photolithography combined with galvanic technology. In this Pray gratings have been realized in which the first-order diffraction efficiencies are polarization independent. Use of a second grating to reduce elliptical beam distortion is demonstrated. Finally it is shown that Rayleigh anomalies for binary diagnostic gratings are accompanied by high absorption. (C) 1996 Optical Society of America
引用
收藏
页码：3662 / 3670
页数：9
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