Research on output power ratio of dual-wavelength Nd:NaLa(WO4)2 laser on 4F3/2→4I13/2 transition

The continuous-wave (CW) dual-wavelength Nd:NaLa(WO4)(2) lasers on F-4(3/2)-> I-4(13/2) transition was studied for the first time. The output power ratio of the orthogonally polarized dual-wavelength laser (OPDWL) can be adjusted with two intracavity uncoated glass plates (GPs). At an incident pump power of 20 W, a CW OPDWL operating at 1334 nm in pi-polarization and 1339 nm in sigma-polarization was realized. The total output power of the OPDWL at 1334 and 1339 nm was more than 5.4 W with 1:1 output power ratio. The output power ratio of the linearly polarized dual-wavelength laser (LPDWL) can be adjusted with two intracavity Lyot filters (LFs). The CW LPDWLs at 1334 and 1380 nm in pi-polarization and at 1339 and 1376 nm in sigma-polarization were also achieved with 1:1 output power ratio, respectively. The total output power of the LPDWL at 1339 and 1376 nm was more than 2.4 W.