Abstract

A theoretical treatment of the photoacoustic effect for a liquid enclosed in a cylindrical cell is given. Simple analytical expressions for the photoacoustic signal are derived for cw and pulse modulation schemes. Modulation frequency or pulse width dependence of the photoacoustic signal is discussed. For the cw modulation scheme it is found that more photoacoustic power is generated in a resonant cell than a nonresonant cell at the expense of bandwidth reduction. Conditions leading to 1/f dependence of the signal on modulation frequency are given. Experimental results are presented that support the simplified treatments. Eventual sensitivities of various excitation schemes under optimum conditions are calculated.

© 1980 Optical Society of America

Photoacoustic effect in a flowing liquid

Richard S. Quimby and Andrew I. Sheinis
Appl. Opt. 26(2) 363-371 (1987)

Photoacoustic effect in piezoelectric ceramics

Grover C. Wetsel
J. Opt. Soc. Am. 70(5) 471-474 (1980)

Relaxation time measurements in frequency and time-domain photoacoustic spectroscopy of condensed phases

A. Mandelis and B. S. H. Royce
J. Opt. Soc. Am. 70(5) 474-480 (1980)

Photoacoustic effect in solids: influence of heat loss

R. Santos and L. C. M. Miranda
Appl. Opt. 19(15) 2551-2555 (1980)

Multiparameter measurement of absorbing liquid by time-resolved photoacoustics

Zuomin Zhao and Risto Myllylä
Appl. Opt. 51(8) 1061-1066 (2012)