Abstract
Three types of absorbing filters were tested for suitability as reproducible attenuators for a Q-switched ruby laser beam. None of the filters tested were irreversibly damaged when irradiated with pulses having peak powers up to 40 MW (beam cross section ∼10−4 m2). However, Tiffen Photar neutral density filters and Corning filters showed reversible photobleaching (optical saturation) at large pulse energies, while Kodak Wratten neutral density filters did not saturate.
© 1975 Optical Society of America
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Rory O. Rice and James D. Macomber
J. Opt. Soc. Am. 65(12) 1489-1494 (1975)
Walter Heitmann
Appl. Opt. 14(12) 3047-3052 (1975)
Douglas L. Franzen
Appl. Opt. 14(3) 647-652 (1975)