title: 650-nJ pulses from a cavity-dumped Yb:fiber-pumped ultrafast optical parametric oscillator.
abstract: Sub-250-fs pulses with energies of up to 650 nJ and peak powers up to 2.07 MW were generated from a cavity-dumped optical parametric oscillator, synchronously-pumped at 15.3 MHz with sub-400-fs pulses from an Yb:fiber laser. The average beam quality factor of the dumped output was M2 ~1.2 and the total relative-intensity noise was 8 mdBc, making the system a promising candidate for ultrafast laser inscription of infrared materials.
authors.affiliation: Scottish Universities Physics Alliance (SUPA), Department of Physics, School of Engineering and Physical Sciences, Heriot-Watt University, Riccarton, Edinburgh, UK. t.p.lamour@hw.ac.uk
authors.forename: Tobias P
authors.initials: TP
authors.lastname: Lamour
authors.forename: Derryck T
authors.initials: DT
authors.lastname: Reid