傅里叶变换光谱仪的衍射与线形

Diffraction and line shape of Fourier-transform spectrometers.

作者信息

Genest Jérôme, Tremblay Pierre

机构信息

Centre d'optique, photonique et laser, Département de génie electrique et de genie informatique, Université Laval, Québec, Canada G1K 7P4.

出版信息

Appl Opt. 2003 Aug 1;42(22):4541-8. doi: 10.1364/ao.42.004541.

DOI:10.1364/ao.42.004541

PMID:12916619

Abstract

The effect of diffraction the instrument line shape of a Fourier-transform spectrometer is studied with an analytical line-shape model. The expression for the instrument line shape of a diffracted point source is obtained. A simple condition on the throughput of the instrument is derived under which diffraction is negligible when compared with the field-of-view-induced line shape. The effect of diffraction is illustrated and compared for various instruments.

摘要

利用解析线型模型研究了衍射对傅里叶变换光谱仪仪器线型的影响。得到了衍射点源仪器线型的表达式。推导了仪器通量的一个简单条件，在该条件下，与视场诱导线型相比，衍射可忽略不计。阐述并比较了不同仪器的衍射效应。