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Proceedings Paper

Sensitive absorption measurements in bulk material and coatings using a photothermal and a photoacoustic spectrometer
Author(s): S. Fieberg; N. Waasem; F. Kühnemann; K. Buse
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Paper Abstract

Bulk and surface absorption in lithium triborate (LBO) and lithium niobate (LiNbO3) are measured using two sensitive measurement techniques, a photoacoustic spectrometer (PAS) and a photothermal common-path interferometer (PCI). As pump light sources, optical parametric oscillators are employed, covering the wavelength ranges 212 − 2500 nm (PAS) and 1460 − 1900 nm and 2460 − 3900 nm (PCI). The spectrometers are used to measure absorption spectra of optical materials across this wide spectral range and to compare the methods in the shared wavelength regime.

Paper Details

Date Published: 20 February 2014
PDF: 7 pages
Proc. SPIE 8964, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIII, 896410 (20 February 2014); doi: 10.1117/12.2035625
Show Author Affiliations
S. Fieberg, Fraunhofer-Institut für Physikalische Messtechnik (Germany)
N. Waasem, Fraunhofer-Institut für Physikalische Messtechnik (Germany)
F. Kühnemann, Fraunhofer-Institut für Physikalische Messtechnik (Germany)
K. Buse, Fraunhofer-Institut für Physikalische Messtechnik (Germany)
Univ. of Freiburg (Germany)

Published in SPIE Proceedings Vol. 8964:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIII
Konstantin L. Vodopyanov, Editor(s)

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