Sensitive photothermal deflection technique for measuring absorption in optically thin media
Author(s) -
A. C. Boccara,
Warren B. Jackson,
Nabil M. Amer,
D. Fournier
Publication year - 1980
Publication title -
optics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.524
H-Index - 272
eISSN - 1071-2763
pISSN - 0146-9592
DOI - 10.1364/ol.5.000377
Subject(s) - photothermal therapy , optics , materials science , photothermal spectroscopy , thin film , deflection (physics) , lens (geology) , attenuation coefficient , limiting , refractive index , absorption (acoustics) , thermal , optoelectronics , physics , nanotechnology , mechanical engineering , engineering , meteorology
We present a highly sensitive and simple photothermal scheme for determining optical absorptions in condensed matter samples. {alpha}l values as low as 10{sup -7} and 10{sup -8} were measured for thin films and coatings and for liquids, respectively. A comparison with thermal lens effect is given, and the experimental factors limiting our sensitivity are discussed
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