Abstract

We report the generation of 0.589-μm radiation from mixing the pump at 1.064 μm and the signal at 1.319 μm of a singly resonant, synchronously pumped AgGaS₂ optical parametric oscillator. A KTP crystal is used for the sum-frequency generation (SFG). Both extracavity and intracavity SFG is demonstrated, with overall conversion efficiencies of 3.5% and 10.5%, respectively. Near-transform-limited pulses of less than 50 ps are generated from 100-ps pulses. With a limited available peak pump power, both spatial orderings of the KTP and the AgGaS₂ crystals for intracavity SFG produce similar conversion efficiency and outputs of similar pulse duration, spectral width, and stability.

© 1994 Optical Society of America

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