8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-425-C7-428
Laser optoacoustic spectroscopy : figures of merit, an up-to-date approachS.V. Egerev, L.M. Lyamshev and A.E. Pashin
N.N. Andreev Acoustics Institute, 4 Shvernika Str., 117036 Moscow, Russia
Optoacoustic (OA) detection apparatus can be used for analysis of various optical absorbers in very dilute concentrations. Parameters of pulse OA spectroscopy as applied to highly transparent samples are derived allowing to compare the potentialities to these of conventional absorption methods. We consider a frequently used OA device based upon linear thermoelastic OA conversion. Practice of both amplitude and dynamic versions of OA method are discussed. The role of pure solvent contribution is revealed. Useful estimates are provided.
© EDP Sciences 1994