Tm:YAP/Ho:YLF Co-cavity dual-wavelength laser

Abstract

This paper introduces a compact intracavity pumped 2 µm dual-wavelength laser. The effects of the axial direction of thulium-doped gain medium and the transmittance of output coupler on the output laser of the dual-wavelength laser were experimentally investigated. Finally, under the output power of 4.92 W, the dual-wavelength outputs with wavelengths of 1979 nm and 2064 nm and corresponding spectral linewidths of 5.4 nm and 3 nm are obtained, and the beam quality factor of the output laser isMX2=1.39 andMY2=1.49. This study provides an experimental basis for the study of cascaded pumped dual-wavelength lasers and 2 µm cavity pumped lasers.