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Proceedings Paper

Optical characterization in laser damage studies
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Paper Abstract

The development of high power lasers and optical micro-components requires optical characterization techniques for studying behavior of optical materials under illumination, laser damage phenomena and ageing. More usual optical characterization tools are based on measurements of absorption, scattering and luminescence; they are non destructive evaluation techniques. It is important to combine several tools which allow getting complementary information. Optical tools can be used in damage initiation studies or to characterize properties of damaged areas. Because defects involved in laser damage initiation are sub-micrometer sized, both high spatial resolution and high sensitivity are required to detect defects as small as possible. Furthermore optical tools have to be implemented in damage set-up and at the same wavelength for a detailed analysis of damage mechanisms. We present an overview of recent developments in the field of optical characterization in connection with laser damage. Especially, a high resolution photothermal deflection microscopy has been coupled with a damage set-up to detect nano-absorbing precursors of damage and to study their behavior under irradiation. Thus model defects such as gold inclusions of various sizes have been followed through irradiation and results are compared with numerical simulations. Optical characterization allows to get determining information if several techniques are associated with numerical simulations.

Paper Details

Date Published: 15 January 2007
PDF: 15 pages
Proc. SPIE 6403, Laser-Induced Damage in Optical Materials: 2006, 64031D (15 January 2007); doi: 10.1117/12.696556
Show Author Affiliations
Mireille Commandré, Institut Fresnel, CNRS 6133 (France)
Univ. Paul Cézanne (France)
Univ. de Provence (France)
Jean Yves Natoli, Institut Fresnel, CNRS 6133 (France)
Univ. Paul Cézanne (France)
Univ. de Provence (France)
Laurent Gallais, Institut Fresnel, CNRS 6133 (France)
Univ. Paul Cézanne (France)
Univ. de Provence (France)
Frank Wagner, Institut Fresnel, CNRS 6133 (France)
Univ. Paul Cézanne (France)
Univ. de Provence (France)
Claude Amra, Institut Fresnel, CNRS 6133 (France)
Univ. Paul Cézanne (France)
Univ. de Provence (France)


Published in SPIE Proceedings Vol. 6403:
Laser-Induced Damage in Optical Materials: 2006
Gregory J. Exarhos; Arthur H. Guenther; Keith L. Lewis; Detlev Ristau; M. J. Soileau; Christopher J. Stolz, Editor(s)

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