title: Mode-locked, continuous-wave, singly resonant optical parametric oscillator.
abstract: We report an actively mode-locked continuous-wave (cw) optical parametric oscillator in singly resonant oscillator (SRO) configuration, generating stable 230 ps pulses at 80 MHz repetition rate. The idler-resonant cw SRO, configured in standing-wave cavity, is based on MgO:sPPLT as the nonlinear gain material and pumped at 532 nm. Mode-locking is achieved by direct deployment of an intracavity phase modulator close to one of the SRO cavity end mirrors. The effects of modulation depth and modulation frequency on mode-locked pulse duration and repetition rate are investigated for both idler and signal pulses. Mode-locking is further confirmed by enhancement of single-pass second-harmonic generation of SRO output in the crystal of β-BaB(2)O(4).
authors.affiliation: ICFO-Institut de Ciencies Fotoniques, Castelldefels, Barcelona, Spain. kavita.devi@icfo.es
authors.forename: Kavita
authors.initials: K
authors.lastname: Devi
authors.forename: S
authors.initials: S
authors.lastname: Chaitanya Kumar
authors.forename: M
authors.initials: M
authors.lastname: Ebrahim-Zadeh