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Proceedings Paper

Absorptance measurements for the DUV spectral range by laser calorimetry
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Paper Abstract

The determination of absorptance in optical components is of crucial interest in respect to their power-handling capability. As a fundamental loss mechanism in the DUV/VUV spectral range, the absorptance is a significant parameter to decide the applicability of an optic in the industrial facilities. The established measuring technique of laser-calorimetry in accordance to the standard ISO 11551 was adapted to the wavelength of the ArF-laser (λ = 193 nm). The present paper describes the developed set-up considering the problems of calibration in the DUV spectral range. In detail, the electrical and optical calibration method were performed and different effects are discussed with regard to the practicability of both procedures. Furthermore, the reduction of scattered light in combination with a remarkable increase in sensitivity is demonstrated. As typical substrate materials for optical components at this laser wavelength, fused silica and CaF2 were investigated determining the absorptance. Simultaneously, the characteristic luminescence spectrum has been recorded during the investigations.

Paper Details

Date Published: 30 May 2003
PDF: 8 pages
Proc. SPIE 4932, Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization, (30 May 2003); doi: 10.1117/12.472385
Show Author Affiliations
Holger Blaschke, Laser Zentrum Hannover e.V. (Germany)
Marco Jupe, Laser Zentrum Hannover e.V. (Germany)
Detlev Ristau, Laser Zentrum Hannover e.V. (Germany)

Published in SPIE Proceedings Vol. 4932:
Laser-Induced Damage in Optical Materials: 2002 and 7th International Workshop on Laser Beam and Optics Characterization
Gregory J. Exarhos; Adolf Giesen; Arthur H. Guenther; Norbert Kaiser; Keith L. Lewis; Horst Weber; M. J. Soileau; Christopher J. Stolz, Editor(s)

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