Abstract
We have successfully resolved the degradation problem of (CLBO) by means of elevated crystal temperature. CLBO crystals were continuously operated at 160 °C in ordinary room humidity. No degradation of performance was observed after more than 1 month. We believe that heating CLBO crystal above 130 °C can relieve stresses introduced by crystal hydration, cutting, polishing, and thermal shock owing to laser power absorption. Thus long-term operation of CLBO crystal is achieved for effective application of laser frequency conversion. Output stability from CLBO is also further enhanced at elevated crystal temperature.
© 1998 Optical Society of America
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