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Electro-optic periodically poled lithium niobate Bragg modulator as a laser Q-switch

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Abstract

We report an electro-optic Bragg modulator using a periodically poled lithium niobate (PPLN) crystal. We measured a half-wave voltage of 160V when transmitting a 1064nm laser through a 14.2mm long, 780μm thick, 20.13μm period PPLN crystal at the Bragg angle. We also demonstrated a Q-switched Nd:YVO4 laser using such a PPLN Bragg modulator as its Q-switch, producing 7.8ns, 201μJ pulses at a 10kHz repetition rate when pumped by a 19.35W diode laser at 808nm.

© 2007 Optical Society of America

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