A method of precisely calculating the external applied voltage and the optimum type-II phase matching angles for KTP crystal, which is used as both an intracavity electro-optic (EO) Q-switch and a frequency doubler, is presented. The effective EO coefficient along the phase-matching direction is defined to calculate the half-wave voltage and the quarter-wave voltage, and the precise calculation for the phase matching angles in the condition of KTP crystal optimum second harmonic phase matching is theoretically realized.
© 2006 Chinese Optics Letters
Yuye Wang, Jianquan Yao, Degang Xu, Pu Zhao, and Peng Wang, "Precise calculation of the KTP crystal used as both an intracavity electro-optic Q-switch and a second harmonic generator," Chin. Opt. Lett. 4, 419-421 (2006)