Location of Repository

Fiber-laser-based, green-pumped, picosecond optical parametric oscillator using fan-out grating PPKTP

By S. Chaitanya Kumar, S. Parsa and M. Ebrahim-Zadeh

Abstract

We report a stable, Yb-fiber-laser-based, green-pumped, picosecond optical parametric oscillator (OPO) for the near-infrared based on periodically poled potassium titanyl phosphate (PPKTP) nonlinear crystal, using fan-out grating design and operating near room temperature. The OPO is continuously tunable across 726–955 nm in the signal and 1201–1998 nm in the idler, resulting in a total signal plus idler wavelength coverage of 1026 nm by grating tuning at a fixed temperature. The device generates up to 580 mW of average power in the signal at 765 nm and 300 mW in the idler at 1338 nm, with an overall extraction efficiency of up to 52% and a pump depletion >76%>76%. The extracted signal at 765 nm and idler at 1746 nm exhibit excellent passive power stability better than 0.5% and 0.8% rms, respectively, over 1 h with good beam quality in TEM00TEM00 mode profile. The output signal pulses have a Gaussian temporal duration of 13.2 ps, with a FWHM spectral bandwidth of 3.4 nm at 79.5 MHz repetition rate. Power scaling limitations of the OPO due to the material properties of PPKTP are studied.Peer ReviewedPostprint (author's final draft

Topics: Àrees temàtiques de la UPC::Física, Optical parametric oscillators, optical parametric oscillator, Òptica
Publisher: OSA
Year: 2016
OAI identifier: oai:upcommons.upc.edu:2117/91053
Journal:

Suggested articles

Preview


To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.