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Proceedings Paper

ESPI-characterization of online deformations of CVD-diamond output coupler windows in high-power IR lasers
Author(s): Ben Depuydt; Pierre Michel Boone; Piet Union; Peter F. Muys
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Paper Abstract

Synthetic diamond, deposited by Chemical Vapour Deposition (CVD), is becoming an interesting alternative for ZnSe as a window material for high power CO lasers. Although the infrared absorption of CVD-dianiond is higher than of ZnSe, this drawback is largely overruled by its better thermal conductivity, leading to smaller temperature gradients in the window and hence a less distorted laser beam. Electronic Speckle Pattern Interferometry (ESPI) is applied to study the on-line deformation of ZnSe and CVD-diamond anti-reflective coated output coupler windows exposed to a high power CO laser beam. It is seen that a ZnSe window already starts deforming at moderate beam power (100 W), while a diamond window does not deform considerably up to a beam power of 700 W.

Paper Details

Date Published: 14 July 1998
PDF: 5 pages
Proc. SPIE 3423, Second GR-I International Conference on New Laser Technologies and Applications, (14 July 1998); doi: 10.1117/12.316630
Show Author Affiliations
Ben Depuydt, Univ. of Gent (Belgium)
Pierre Michel Boone, Univ. of Gent (Belgium)
Piet Union, Radius Engineering NV (Belgium)
Peter F. Muys, Radius Engineering NV (Belgium)

Published in SPIE Proceedings Vol. 3423:
Second GR-I International Conference on New Laser Technologies and Applications
Alexis Carabelas; Paolo Di Lazzaro; Amalia Torre; Giuseppe Baldacchini, Editor(s)

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