聚焦激光束加热时脉冲光热偏转光谱的理论及构型优化  

THEORY AND BEAM GEOMETRY OPTIMIZATION OF PULSED PHOTOTHERMAL DEFLECTION SPECTROSCOPY WITH FOCUSED LASER BEAM EXCITATION

作　　者：李斌成[1] 邓延倬[1] 程介克[1] 

机构地区：[1]武汉大学化学系分析测试中心

出　　处：《光谱学与光谱分析》1996年第1期19-24,共6页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金

摘　　要：本文给出了聚焦激光束加热时脉冲光热偏转光谱的理论，考虑了加热束传输特性和探测束有限尺寸的影响。比较了各种理论模型及其适用范围。并对紧聚焦激光束加热时脉冲光热偏转光谱的各项结构参数进行了优化。In this paper, the theory of pulsed photothermal deflection spectroscopy that accounts for both the propagaton of excitation beam and the finite size of the probe beam is presented and compared with the existed theoretical models. The applicabilities of all theoreticaltreatments are discussed. The beam geometry of pulsed photothermal deflection spectroscopywith tightly focused laser beam excitation is optimized.

关 键 词：聚焦激光束 光热偏转光谱 理论模型 

分 类 号：O433[机械工程—光学工程]