Abstract

Passively Q-switched 1.064-μm microchip lasers have been constructed from thin pieces of Nd3+:YAG bonded to thin pieces of Cr4+:YAG. When pumped with the unfocused 1.2-W output of a fiber-coupled diode, these devices produced 11-μJ pulses of 337-ps duration at a pulse repetition rate of 6 kHz in a single-frequency TEM00 mode. The peak power of the lasers was in excess of 28 kW, with unfocused peak output intensities exceeding 180 MW/cm2.

© 1994 Optical Society of America

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