title: Design of a broadband source by using the retracing behavior of a collinear quasi-phase-matching optical parametric generator.
abstract: In this paper, we introduce a concept of phase matching bandwidth of broadband sources by using the retracing behavior of collinear quasi-phase-matching (CQPM) optical parametric generation (OPG) in periodically poled lithium niobate (PPLN). By comparing various pump wavelengths we derive the pumping condition and parameters of PPLN to realize a broadband source near 1550 nm in the CQPM-OPG. We predict the optimum pump wavelength and the maximum ideal bandwidth range to be 940.75 nm and 1475-1681 nm respectively. Experimentally we have demonstrated a 946 nm Nd:YAG laser which serves as the pumping source of CQPM-OPG.
authors.forename: Yang
authors.initials: Y
authors.lastname: Lu
authors.forename: Baigang
authors.initials: B
authors.lastname: Zhang
authors.forename: Enbang
authors.initials: E
authors.lastname: Li
authors.forename: Jianquan
authors.initials: J
authors.lastname: Yao