title: High-efficiency mid-infrared ZnGeP2 optical parametric oscillator in a multimode-pumped tandem optical parametric oscillator.
abstract: We demonstrate a high-efficiency ZnGeP(2) optical parametric oscillator (OPO) pumped by another KTP OPO in a multimode-pumped tandem OPO configuration. The maximum optical-to-optical and slope efficiencies were 32% and 42.5%, respectively. Our setup also provides tunable multiband radiation in the 2.03-2.32-microm range and the 2.9-6.2-microm range simultaneously.
authors.affiliation: DSO National Laboratories, 20 Science Park Drive, Singapore. ppohboon@dso.org.sg
authors.forename: P B
authors.initials: PB
authors.lastname: Phua
authors.forename: K S
authors.initials: KS
authors.lastname: Lai
authors.forename: R F
authors.initials: RF
authors.lastname: Wu
authors.forename: T C
authors.initials: TC
authors.lastname: Chong