We report a new type of optical parametric oscillator cavity, i.e., a compound cavity with a grazing-incidence prism. The optical parametric oscillator is based on a β-BaB<sub>2</sub>O<sub>4</sub> crystal and is pumped by the third harmonic of a Nd:YAG laser. Compared with the grazing-incidence-prism optical parametric oscillator (narrow-band cavity), the compound cavity has the same linewidth, whereas its threshold is only half as high and its external efficiency is an order of magnitude greater.
© 1997 Optical Society of America
Yi Zhou, Zuyan Xu, Daoqun Deng, Yufei Kong, Xiang-An Zhu, and Zhizhong Yan, "Optical parametric system with a compound cavity and a grazing-incidence prism," J. Opt. Soc. Am. B 14, 1496-1500 (1997)