Collision narrowing and speed dependent effect on broadening in vibration rotation line profiles perturbed by different buffer gases up to one atmosphere-difficulties in these analyses coming from the quality of the tunable diode laser emission

被引：11

作者：

Henry, A ^{[1
]}

Hurtmans, D ^{[1
]}

机构：

[1] Univ Paris 06, CNRS, LPMA, F-75005 Paris, France

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 1999年 / 55卷 / 10期

关键词：

spectral intensity distribution within a diode laser mode; infrared spectrometry;

D O I：

10.1016/S1386-1425(99)00069-4

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Different tunable diode lasers (TDL), tightly controlled by a Michelson interferometer, have been used to study precisely the evolution of absorption line profiles when the pressure increases. For this purpose the spectral intensity distribution within each given TDL mode has been determined by comparing the observed spectrum of a narrow absorption line at very low pressure (Doppler line) with a calculated spectrum, convolution product of the TDL intensity distribution with the exact absorption line shape precisely described by a Gauss profile. Examples of confinement narrowing and absorber speed dependent effect are given with CO or HCl in different buffer gases (N-2, He, Ne, Ar and Xe) and the line parameters have been deduced taking into account the intensity distribution of the TDL emission. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：1967 / 1986

页数：20

共 24 条

[1] Anomalies of pressure broadening in the H-2 S-0(3) transition versus perturber concentration [J].