Abstract
An internal doubling efficiency of 64% at was obtained in a single-pass configuration with an uncoated, 1-cm-long, bulk periodically poled KTP crystal placed outside the resonator of a pulsed, diode-pumped Nd:YAG laser. An average of 4.8 W of green light was obtained from a 7.5-W pump beam inside the crystal. Doubling efficiency exceeded 50% at levels of . The measured thermal tolerance of the doubling process (FWHM) was , and the measured temperature tuning coefficient was .
© 1997 Optical Society of America
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