Spectral resolution enhancement without increasing the number of grooves in grating-based spectrometers

被引：9
|
作者：
Lee, Eun Seong [1 ]
机构：
[1] Korea Res Inst Stand & Sci, Div Convergence Technol, Taejon 305340, South Korea
来源：
OPTICS LETTERS | 2011年 / 36卷 / 24期
基金：
新加坡国家研究基金会;
关键词：
INTERFEROMETER;
D O I：
10.1364/OL.36.004803
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A simple scheme of an optical setup to enhance the spectral resolution of diffraction gratings without increasing the number of grooves is presented. A plane-parallel mirror pair, which consists of a 100% reflectivity mirror and a 50% reflectivity mirror, is placed upon a grating. For certain values of the mirror gap and the angle between the grating and the mirrors, the effective size of the grating doubles, as does the resolution. Using a grating of 830 grooves/mm and a narrow-band diode laser that is tunable around 773 nm, we experimentally demonstrated an enhancement of the resolution by a factor of 2. (C) 2011 Optical Society of America
引用
收藏
页码：4803 / 4805
页数：3
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