Photoacoustic technique for determining optical absorption coefficients in solids
Applied Optics, Vol. 16, Issue 1, pp. 101-107 (1977)
http://dx.doi.org/10.1364/AO.16.000101
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Abstract
An investigation was made of a photoacoustic technique for determining the optical absorption coefficient in solids. A train of laser pulses was passed through the solid, and a piezoelectric transducer attached directly to the sample measured the amplitude of the elastic wave generated by the absorbed radiation. Calibration was performed at a wavelength of known absorption. The sensitivity of the technique was found to be limited to about 1 × 10-5 cm-1 in our samples due to radiation scattered onto the transducer, but the technique is capable of measuring absorption coefficients in the 10-6-cm-1 range using laser powers of about 1 W.
Citation
A. Hordvik and H. Schlossberg, "Photoacoustic technique for determining optical absorption coefficients in solids," Appl. Opt. 16, 101-107 (1977)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-16-1-101
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