A MODEL FOR CW LASER-INDUCED MODE-MISMATCHED DUAL-BEAM THERMAL LENS SPECTROMETRY

被引：472

作者：

JUN, S ^{[1
]}

LOWE, RD ^{[1
]}

SNOOK, RD ^{[1
]}

机构：

[1] UNIV MANCHESTER,INST SCI & TECHNOL,DEPT INSTRUMENTAT & ANALYT SCI,POB 88,MANCHESTER M60 1QD,LANCS,ENGLAND

来源：

CHEMICAL PHYSICS | 1992年 / 165卷 / 2-3期

关键词：

D O I：

10.1016/0301-0104(92)87053-C

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Thermal lens spectrometry is a highly sensitive technique for chemical analysis of solutions. The mode-mismatched dual-beam method is more sensitive than the mode-matched dual-beam or single beam method. Unfortunately, there is no theoretical model for the cw laser induced mode-mismatched dual-beam method. In this paper, taking the aberrant nature of thermal lens into account a theoretical model for cw laser induced thermal lens spectrometry is presented. The model is suitable for mode-mismatched, mode-matched dual-beam and single-beam methods. The model is of simple mathematical expression and convenient to use for both steady-state measurements and time-resolved techniques. Experimental proofs of the model are presented and found to be in good agreement.

引用

页码：385 / 396

页数：12

共 20 条

[1] BEAM GEOMETRY OPTIMIZATION IN DUAL-BEAM THERMAL LENSING SPECTROMETRY [J].