Watt-Level Pr3+:LiYF4 Novel Green Lasers at 519 nm, 538 nm, and 550 nm

We report the first demonstration on three new wavelengths of 519 nm, 538 nm, 550 nm in the sigma-polarized direction based on continuous-wave (CW) Pr3+:LiYF4 laser. The transitions mechanism combined dual upper energy levels of 3P1 and 3P0 with Stark sub-levels of 3H5 was proposed. The CW lasers achieve output power greater than watt levels in the sigma-polarized direction at room temperature, with 1.21 W at 519 nm, 1.45 W at 538 nm, and 1.06 W at 550 nm.

Automated summary

This paper presents the first demonstration of three new wavelengths in the sigma-polarized direction using a continuous-wave Pr3+:LiYF4 laser. The transitions mechanism is proposed based on dual upper energy levels and Stark sub-levels. The lasers achieve high output power at room temperature.