Ultraviolet second-harmonic generation in first-order periodically poled MgO:LiNbO<sub>3</sub> is presented. Using a high-voltage multipulse application method, we fabricated a first-order nonlinear grating with a period of 1.8μm and depth of ~150μm over 10-mm interaction length in a 1-mm-thick MgO:LiNbO<sub>3</sub> substrate. In a single-pass configuration, continuous-wave 30-mW UV light at 362.5 nm was generated for a fundamental power of 522 mW, corresponding to a normalized conversion efficiency of 11%/W .
© 2003 Optical Society of America
Kiminori Mizuuchi, Tomoya Sugita, and Kazuhisa Yamamoto, "Generation of 360-nm ultraviolet light in first-order periodically poled bulk MgO:LiNbO3," Opt. Lett. 28, 935-937 (2003)