NEW PULSED PHOTOACOUSTIC TECHNIQUE FOR MEASURING ABSOLUTE OPTICAL-ABSORPTION COEFFICIENT

Authors
EGEREV SV LYAMSHEV LM PASHIN AE FOKIN AV
Citation
Sv. Egerev et al., NEW PULSED PHOTOACOUSTIC TECHNIQUE FOR MEASURING ABSOLUTE OPTICAL-ABSORPTION COEFFICIENT, Journal de physique. IV, 4(C7), 1994, pp. 381-384
Citations number
6
Categorie Soggetti
Physics
Journal title
Journal de physique. IV → ACNP
ISSN journal
11554339
Volume
4
Issue
C7
Year of publication
1994
Pages
381 - 384
Database
ISI
SICI code
1155-4339(1994)4:C7<381:NPPTFM>2.0.ZU;2-R
Abstract
Pulsed photoacoustic spectroscopy (PAS) technique for measuring absolu te optical absorption coefficient requiring no additional measurements is presented. It is based on determination of amplitude-time characte ristics of PA signal generated in air surrounding sample under investi gation. PA signal is excited by short laser pulse. Sample is placed in a three-chamber PA cell. Time dependence of PA signal expected in dif ferent chambers of PA cell is derived. Water absorption coefficient at IR wavelength was measured.