SYMPOSIA PAPER Published: 01 January 1988

Variations with Laser Pulse Duration of the Thresholds at 350-nm and 1064-nm for Bulk Damage in Crystals of KDP


Five separate laser facilities were used to measure 350-nm and 1064-nm thresholds for bulk damage in crystals of KDP. At 1064-nm, tests were made with single laser pulses having durations of 1, 9 and 25 ns and with 9-ns pulses incident at 10 Hz. At 350-nm test were made with single pulses having durations of 0.6, 5.0 and 25 ns and with 25-nm pulses incident at rates up to 50 Hz. Over the range from 0.6 to 25 ns, 350-nm thresholds increased by a factor of approximately 2, and 350-nm thresholds were almost independent of laser repetition rate. The 1064-nm thresholds increased by a factor > 3 as pulse duration increased from 1 to 25 ns. Laser hardening of thresholds was observed at both 350-nm and 1064-nm.

Author Information

Gonzales, RP
Staggs, MC
Singleton, MF
George, D
Weinzapfel, CL
Weinzapfel, S
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Developed by Committee: F01
Pages: 206–206
DOI: 10.1520/STP18552S
ISBN-EB: 978-0-8031-5032-4
ISBN-13: 978-0-8031-4477-4