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Proceedings Paper

Limiting laser-induced damage in a high-repetition rate CO2 laser chain
Author(s): Francois J. Prinsloo; Stephanus P. van Heerden; Lourens R. Botha; Einar Ronander; Chris J. Herselman; R. Wellman
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Paper Abstract

A CO2 master oscillator power amplifier (MOPA) laser chain has been developed capable of producing approximately 2J per pulse at 2kHz. This leads to a unique combination of high peak and average power in a single laser system. As the laser is to be used in a process where it must be capable of prolonged periods of operation, a method had to be devised to allow constant monitoring of the beam profile and behavior of the optical components to ensure that the laser induced damage thresholds (LIDT) of the optical components are not exceeded. A photoacoustic detector (PAD), that allows determination of damage to optical components, and a M2, or beam quality detector for accurate calculation of beam profiles in the CO2 laser chain have been developed. The results obtained with these detectors will be discussed.

Paper Details

Date Published: 14 July 1995
PDF: 14 pages
Proc. SPIE 2428, Laser-Induced Damage in Optical Materials: 1994, (14 July 1995); doi: 10.1117/12.213729
Show Author Affiliations
Francois J. Prinsloo, Atomic Energy Corp. of South Africa (South Africa)
Stephanus P. van Heerden, Atomic Energy Corp. of South Africa (South Africa)
Lourens R. Botha, Atomic Energy Corp. of South Africa (South Africa)
Einar Ronander, Atomic Energy Corp. of South Africa (South Africa)
Chris J. Herselman, Atomic Energy Corp. of South Africa (South Africa)
R. Wellman, Atomic Energy Corp. of South Africa (South Africa)


Published in SPIE Proceedings Vol. 2428:
Laser-Induced Damage in Optical Materials: 1994
Harold E. Bennett; Arthur H. Guenther; Mark R. Kozlowski; Brian Emerson Newnam; M. J. Soileau, Editor(s)

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