title: Single-frequency, high-power, continuous-wave fiber-laser-pumped Ti:sapphire laser.
abstract: We demonstrate a high-power, continuous-wave (cw), single-frequency green source based on single-pass second-harmonic generation of a Yb-fiber laser in MgO:sPPLT as a viable pump source for a cw single-frequency Ti:sapphire ring laser. By careful design and optimization, the Ti:sapphire laser can provide as much as 2.3 W of cw single-frequency output across a 47 nm tuning range, limited by the reflectivity of the cavity mirrors. By implementing active stabilization of the laser frequency to an external reference, an ultrastable Fabry-Perot interferometer, we obtain a frequency stability better than 12 MHz over 10 min and continuous tunability greater than 180 MHz. Stable output power with peak-to-peak fluctuation of 5.4% over 75 min, in high spatial beam quality with M(2)<1.34, is achieved.
authors.affiliation: ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels, Barcelona, Spain. chaitanya.suddapalli@icfo.es
authors.forename: Suddapalli Chaitanya
authors.initials: SC
authors.lastname: Kumar
authors.forename: Goutam Kumar
authors.initials: GK
authors.lastname: Samanta
authors.forename: Kavita
authors.initials: K
authors.lastname: Devi
authors.forename: Stefano
authors.initials: S
authors.lastname: Sanguinetti
authors.forename: Majid
authors.initials: M
authors.lastname: Ebrahim-Zadeh