Continuous-wave Nd : GYSGG laser properties in 1.3 and 1.4<i>µ</i>m regions based on⁴<i>F</i>_3/2to⁴<i>I</i>_13/2transition

Abstract

Continuous-wave laser properties of Nd : GYSGG crystal based on the transition from 4F3/2 to 4I13/2 are investigated. With different output couplers, single or multiple wavelength lasers operating at 1321, 1336, 1404 and 1424 nm are obtained, which provide new options in these wavelength bands. In the 1.3 µm region, the maximum output power is 2.5 W, corresponding to the conversion efficiency of 18.5%. In the 1.4 µm region, the maximum output power at 1424 nm is 707 mW, corresponding to the conversion efficiency of 6.8%. The output power and conversion efficiency can be improved with better anti-reflection coatings for the laser crystal.