Using Fast Fourier Transform to compute the line shape of frequency-modulated spectral profiles

被引：67

作者：

Dore, L ^{[1
]}

机构：

[1] Univ Bologna, Dipartimento Chim G Ciamician, I-40126 Bologna, Italy

来源：

JOURNAL OF MOLECULAR SPECTROSCOPY | 2003年 / 221卷 / 01期

关键词：

frequency modulation spectroscopy; spectral line shapes; Voigt profile; Galatry profile;

D O I：

10.1016/S0022-2852(03)00203-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

An expression for the shape of spectral lines recorded by sinusoidal frequency modulation and harmonic detection is derived. It can be fast computed by means of the Fast Fourier Transform method and it holds for any modulation depth and modulation frequency. Different line shape functions, such as Voigt, Galatry, and speed-dependent Voigt, may be included in the model. In this work, the performance of the computing method is tested with experimental second harmonic rotational profiles, but it can be applied to higher harmonic spectra as well. (C) 2003 Elsevier Inc. All rights reserved.

引用

页码：93 / 98

页数：6

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