Sensitive absorption measurements in bulk material and coatings using a photothermal and a photoacoustic spectrometer

S. Fieberg; N. Waasem; F. Kühnemann; K. Buse

doi:10.1117/12.2035625

20 February 2014 Sensitive absorption measurements in bulk material and coatings using a photothermal and a photoacoustic spectrometer

S. Fieberg, N. Waasem, F. Kühnemann, K. Buse

Author Affiliations +

Proceedings Volume 8964, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIII; 896410 (2014) https://doi.org/10.1117/12.2035625
Event: SPIE LASE, 2014, San Francisco, California, United States

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.

Citation Download Citation

S. Fieberg, N. Waasem, F. Kühnemann, and K. Buse "Sensitive absorption measurements in bulk material and coatings using a photothermal and a photoacoustic spectrometer", Proc. SPIE 8964, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIII, 896410 (20 February 2014); https://doi.org/10.1117/12.2035625

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