title: Phase-matched self-doubling optical parametric oscillator.
abstract: We report a synchronously pumped intracavity frequency-doubled optical parametric oscillator that employs a single KTiOPO(4) crystal for both parametric generation and frequency doubling. Both nonlinear processes are phase matched for the same direction of propagation in the crystal. The parametric oscillator, pumped by a femtosecond Ti:sapphire laser at a wavelength of 745 nm, generates a green output beam at 540 nm with a 29% power conversion efficiency. Angle tuning in conjunction with pump wavelength tuning provides output tunability in the 530-585-nm range.
authors.forename: T
authors.initials: T
authors.lastname: Kartalo Lu
authors.forename: K G
authors.initials: KG
authors.lastname: Köprülü
authors.forename: O
authors.initials: O
authors.lastname: Aytür