title: Orange-to-red tunable picosecond pulses by frequency doubling in a diode-pumped PPKTP waveguide.
abstract: A compact picosecond all-room-temperature orange-to-red tunable laser source in the spectral region between 600 and 627 nm is demonstrated. The tunable radiation is obtained by second-harmonic generation in a periodically poled potassium titanyl phosphate (PPKTP) multimode waveguide using a tunable quantum-dot external-cavity mode-locked laser. The maximum second-harmonic output peak power of 3.91 mW at 613 nm is achieved for 85.94 mW of launched pump peak power at 1226 nm, resulting in conversion efficiency of 4.55%.
authors.affiliation: Photonics & Nanoscience Group, School of Engineering, Physics and Mathematics, University of Dundee, Dundee, UK. K.A.Fedorova@dundee.ac.uk
authors.forename: K A
authors.initials: KA
authors.lastname: Fedorova
authors.forename: G S
authors.initials: GS
authors.lastname: Sokolovskii
authors.forename: D I
authors.initials: DI
authors.lastname: Nikitichev
authors.forename: P R
authors.initials: PR
authors.lastname: Battle
authors.forename: I L
authors.initials: IL
authors.lastname: Krestnikov
authors.forename: D A
authors.initials: DA
authors.lastname: Livshits
authors.forename: E U
authors.initials: EU
authors.lastname: Rafailov