PHOTOACOUSTIC DETERMINATION OF SMALL OPTICAL-ABSORPTION COEFFICIENTS - EXTENDED THEORY

被引:26
作者
MCDONALD, FA
机构
[1] Southern Methodist University, Physics Department, Dallas, TX
来源
APPLIED OPTICS | 1979年 / 18卷 / 09期
关键词
D O I
10.1364/AO.18.001363
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Photoacoustic measurement of small absorption coefficients provides an important alternative to standard techniques.The theoretical basis for such measurements is extended to include the effects of thermally generated mechanical motion of the sample, by incorporating the thermoelastic equations for an isotropic solid in a cylindrical configuration.Sample calculations show that this thermoacoustic effect may dominate the photoacoustic signal for certain modulation frequencies and beam configurations.© 1979 Optical Society of America.
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页码:1363 / 1367
页数:5
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