Investigation of fiber-coupled laser-diode-pumped NYAB green laser performance

Abstract

The optimum pump condition for a fiber-coupled diode end-pumped NYAB laser has been determined by including the effect of pump beam quality into the analysis. Under the optimum pump condition, 67 mW of the green laser output corresponding to a conversion efficiency 10.3% was obtained from a self frequency-doubling NYAB crystal when pumped by a 650 mW fiber-coupled laser diode. The prospect of higher conversion efficiency is also discussed.