title: Theoretical models and analytic expressions for buildup time of pulsed confocal unstable optical parametric oscillators with uniform or Gaussian reflectivity mirrors.
abstract: 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.
authors.affiliation: Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China. zss01@mails.tsinghua.edu.cn
authors.forename: Shanshan
authors.initials: S
authors.lastname: Zou
authors.forename: Mali
authors.initials: M
authors.lastname: Gong
authors.forename: Qiang
authors.initials: Q
authors.lastname: Liu
authors.forename: Ping
authors.initials: P
authors.lastname: Yan
authors.forename: Gang
authors.initials: G
authors.lastname: Chen