High-energy, narrow-bandwidth periodically poled Mg-doped LiNbO3 optical parametric oscillator with a volume Bragg grating

Jiro Saikawa; Masaaki Fujii; Hideki Ishizuki; Takunori Taira

doi:10.1364/ol.32.002996

High-energy, narrow-bandwidth periodically poled Mg-doped LiNbO3 optical parametric oscillator with a volume Bragg grating

Opt Lett. 2007 Oct 15;32(20):2996-8. doi: 10.1364/ol.32.002996.

Authors

Jiro Saikawa¹, Masaaki Fujii, Hideki Ishizuki, Takunori Taira

Affiliation

¹ Chemical Spectroscopy Division, Chemical Resources Laboratory, Tokyo Institute of Technology, 4259-R1-15, Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan. saikawa@ims.ac.jp

PMID: 17938678
DOI: 10.1364/ol.32.002996

Abstract

We have demonstrated a simple, high-energy, narrow spectral bandwidth optical parametric oscillator (OPO) by use of a large aperture periodically poled Mg-doped LiNbO(3) device with a volume Bragg grating (VBG). A free-running degenerate OPO pumped by a Q-switched 1.064 microm Nd:YAG laser exhibits maximum output pulse energy of 110 mJ with high slope efficiency of 75% around room temperature. Broad spectral bandwidth (Dlambda~100 nm) around the degeneracy wavelength was suppressed by using a VBG as an output coupler. Up to 61 mJ of the output pulse energy with narrowed spectral bandwidth of less than 1.4 nm was obtained at the degeneracy wavelength of 2.128 microm.