Simultaneous dual-wavelength lasers at 1064 and 1342 nm in femtosecond-laser-written Nd:YVO_4 channel waveguides

Dual-wavelength waveguide lasing at 1064 and 1342 nm corresponding to the 4F3/2→4I11/2 and 4F3/2→4I13/2 Nd transitions has been demonstrated in a femtosecond-laser-inscribed Nd:YVO4 channel waveguide. Under 808 nm optical pumping, the obtained laser thresholds at 1064 and 1342 nm were 180 and 210 mW, respectively. The laser slope efficiencies at 1064 and 1342 nm were found to be 15.6% and 1.7%, respectively.