Calorimetric measurement of optical absorption and transmissivity with sub-ppm sensitivity

Uwe Willamowski; Tobias Gross; Detlev Ristau; Herbert Welling

doi:10.1117/12.246744

19 August 1996 Calorimetric measurement of optical absorption and transmissivity with sub-ppm sensitivity

Uwe Willamowski, Tobias Gross, Detlev Ristau, Herbert Welling

Proceedings Volume 2775, Specification, Production, and Testing of Optical Components and Systems; (1996) https://doi.org/10.1117/12.246744
Event: Optical Instrumentation and Systems Design, 1996, Glasgow, United Kingdom

Abstract

We report on the development of a laser calorimeter with sub ppm sensitivity. Besides the adaptation of the sample holder for low loss measurements, different ways of evaluating calorimetric data and methods for the detection and compensation of scatter irradiation effects as well as other signal distortions are discussed. As laser sources, an AR- laser and a Nd-YAG laser with frequency doubling option are employed for the measurements. The system is used for the characterization of different types of KTP crystals for frequency conversion. The results show a distinct polarization dependency of the absorption, throughout all crystals investigated.

Citation Download Citation

Uwe Willamowski, Tobias Gross, Detlev Ristau, and Herbert Welling "Calorimetric measurement of optical absorption and transmissivity with sub-ppm sensitivity", Proc. SPIE 2775, Specification, Production, and Testing of Optical Components and Systems, (19 August 1996); https://doi.org/10.1117/12.246744

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