Tunable liquid-crystal filter for solar imaging at the He I 1083-nm line

被引：43

作者：

Kopp, GA

Derks, MJ

Elmore, DF

Hassler, DM

Woods, JC

Streete, JL

Blankner, JG

机构：

[1] NATL CTR ATMOSPHER RES,HIGH ALTITUDE OBSERV,BOULDER,CO 80307

[2] RHODES COLL,DEPT PHYS,MEMPHIS,TN 38112

来源：

APPLIED OPTICS | 1997年 / 36卷 / 01期

关键词：

tunable filters; liquid crystals; Lyot-Ohman; BIREFRINGENT FILTERS;

D O I：

10.1364/AO.36.000291

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A Lyot-Ohman filter for imaging near the solar He I 1083-nm line is described. Fast and continuous spectral tunability is provided by nematic liquid crystals. This solid-state filter has a free spectral range of 2.35 nm and a spectral resolution of 0.135 nm at the operating wavelength of 1083 nm. A wide-fielded design was used for both static and electro-optic retarder elements, facilitating use in fast imaging systems. A first-light He I image of the Sun is presented. (C) 1997 Optical Society of America

引用

页码：291 / 296

页数：6

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