title: Efficient femtosecond optical parametric oscillator with dual-wavelength operation.
abstract: We demonstrated on a synchronously pumped femtosecond optical parametric oscillator with dual-signal-wavelength operation. Our results showed that the dual-wavelength oscillation is not determined by the net-zero dispersion but rather by the balance of phase matching and group-velocity mismatching caused by the nonlinear crystal between the two signals. With a MgO-doped periodically poled lithium niobate as the nonlinear crystal, total signal power up to 530 mW was obtained by using a 2.6 W femtosecond Ti:sapphire laser at the central wavelength of 808 nm as the pump source, corresponding to a conversion efficiency of 20.4%. By slightly adjusting the cavity length, the signal wavelength can be broadly tuned from 1001 to 1438 nm and the dual-wavelength tuning range is from 1001 to 1204 nm.
authors.affiliation: School of Technical Physics, Xidian University, Xi’an 710071, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Xu
authors.forename: Xin
authors.initials: X
authors.lastname: Zhong
authors.forename: Jiangfeng
authors.initials: J
authors.lastname: Zhu
authors.forename: Hainian
authors.initials: H
authors.lastname: Han
authors.forename: Zhiyi
authors.initials: Z
authors.lastname: Wei
mesh_terms: D008277:Magnesium Oxide / Q000737:chemistry; D009556:Niobium / Q000737:chemistry; D055620:Optical Phenomena; D010087:Oxides / Q000737:chemistry; D013997:Time Factors
chemical_list: D010087:Oxides; D009556:Niobium; C091692:lithium niobate; D008277:Magnesium Oxide