Spectrum-narrowed 2-µm source by KTP/PPMgLN-OPO

Spectrum-narrowed 2-µm OPO was realized by coupled OPO operation of large-aperture PPMgLN and KTP. Spectrum-narrowed 2-µm light generation with maximum output energy of 15.6 mJ at input pumping energy of 47.2 mJ could be realized.