SEDL / STP / STP1015-EB / STP18800S

Time of Damage and the Effect of the Pulse Repetition Frequency on the Laser Induced Damage Threshold

Wood, RM
GEC Research Ltd., Hirst Research Centre, Wembley, Middlesex

Sharma, SK
GEC Research Ltd., Hirst Research Centre, Wembley, Middlesex

Waite, P
GEC Research Ltd., Hirst Research Centre, Wembley, Middlesex

Gorton, EK
Royal Signals Research Laboratories, Malvern, Worcestershire

Lewis, K
Royal Signals Research Laboratories, Malvern, Worcestershire

Pages: 8    Published: Jan 1988

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Abstract

The time of damage has been measured as a function of pulse input energy for a range of i-r windows and mirrors.

More data and understanding of the mechanisms involved has been gained of the effect of laser pulse repetition frequency on the laser induced damage thresholds of infra-red transmitting window materials. Results on Ge, Si, GaAs, ZnS, ZnSe, NaCl and KCl are presented together with comments on the mechanisms which lower the damage threshold from the single shot damage level.