We have successfully resolved the degradation problem of CsLiB<sub>6</sub>O<sub>10</sub> (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
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.3610) Lasers and laser optics : Lasers, ultraviolet
(190.0190) Nonlinear optics : Nonlinear optics
(190.4400) Nonlinear optics : Nonlinear optics, materials
Y. K. Yap, T. Inoue, H. Sakai, Y. Kagebayashi, Y. Mori, T. Sasaki, K. Deki, and M. Horiguchi, "Long-term operation of CsLiB6O10 at elevated crystal temperature," Opt. Lett. 23, 34-36 (1998)