A theoretical model and a simplified analytic expression are developed to describe the buildup time of a pulsed confocal unstable optical parametric oscillator (OPO) with a uniform-reflectivity mirror (URM) or a Gaussian-reflectivity mirror (GRM). Two analytic expressions have been demonstrated to correspond to theoretical models with a sufficient degree of accuracy. The effects of a variety of cavity and pump parameters on the buildup time of an OPO were investigated and analyzed. It was found that a GRM unstable OPO generally exhibits a shorter buildup time than the corresponding URM unstable OPO with equally effective output coupling.
© 2005 Optical Society of America
Original Manuscript: November 29, 2004
Revised Manuscript: May 27, 2005
Manuscript Accepted: May 31, 2005
Published: October 20, 2005
Shanshan Zou, Mali Gong, Qiang Liu, Ping Yan, and Gang Chen, "Theoretical models and analytic expressions for buildup time of pulsed confocal unstable optical parametric oscillators with uniform or Gaussian reflectivity mirrors," Appl. Opt. 44, 6456-6461 (2005)