In this paper we report optical damage as a bulk glass recording process. We used a 10 Hz, 35 picoseconds, 5 mJ polarized Nd:YAG pulse laser focused using a 25 mm lens to create 50 m average optical damage spots to record a computer generated hologram embedded in stress free BK-7 glass. It was observed that for the recording conditions the material surrounding the damage spot was induced birefringence altered producing a 70 m pixel optimal separation. All Rights Reserved
We report simultaneous dual wavelength dye laser emission using Littman-Metcalf and Littrow cavity configurations with minimum cavity elements. Dual wavelength operation is obtained by laser operation in two optical paths inside the cavity, one of which uses reflection in the circulating dye cell. Styryl 14 laser dye operating in the 910 nm to 960 nm was used in a 15%:85% PC/EG solvent green pumped with a Q-switched doubled Nd3+:YAG laser.
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