Calibration procedures for a 10.6-um laser calorimeter

Michael Kennedy; Detlev Ristau; Gabriel Dumitru; Dan G. Sporea; Clementina A. Timus

doi:10.1117/12.312718

2 July 1998 Calibration procedures for a 10.6-μm laser calorimeter

Michael Kennedy, Detlev Ristau, Gabriel Dumitru, Dan G. Sporea, Clementina A. Timus

Proceedings Volume 3405, ROMOPTO '97: Fifth Conference on Optics; (1998) https://doi.org/10.1117/12.312718
Event: ROMOPTO '97: Fifth Conference on Optics, 1997, Bucharest, Romania

Abstract

The paper presents the theoretical background of laser calorimetry as a method to investigate the absorptance of optical components, according to the recently adopted ISO Standard 11 551. An experimental set-up for optical absorption measurements, including a cw CO₂ laser and a calorimetric chamber, is presented. The calibration of the laser calorimetric set-up is also described. The calibration involved several steps: laser power calibration, evaluation of chamber sensitivity, electrical calibration using electrically heated samples and optical calibration utilizing 100% absorptance samples. There were measured the conversion factors for the laser power and for the sample temperature; there were calculated over-all correction factors for the different substrates and they could be placed within +/- 4% around their mean value.

Citation Download Citation

Michael Kennedy, Detlev Ristau, Gabriel Dumitru, Dan G. Sporea, and Clementina A. Timus "Calibration procedures for a 10.6-μm laser calorimeter", Proc. SPIE 3405, ROMOPTO '97: Fifth Conference on Optics, (2 July 1998); https://doi.org/10.1117/12.312718

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