More than 6 W average power ultraviolet radiation at 355 nm was generated in LiB3O5 (LBO) crystal through the frequency mixing of the fundamental and second harmonic radiation of a Nd:YAG laser. This performance was achieved with 38% optical-to-optical conversion efficiency (532 nm to 355 nm).
© 2005 Chinese Optics Letters
Yong Bi, Yan Feng, Huarong Gong, Hongbo Zhang, and Zuyan Xu, "High-average power THG of a diode-pumped Nd:YAG laser at 355 nm generated by LiB3O5 crystal," Chin. Opt. Lett. 1, 91-92 (2003)