1.Centre de Recherche sur les Ions, les Matériaux et la Photonique (CIMAP),UMR 6252 CEA-CNRS-ENSICaen, Université de Caen,Caen,France;2.Department of Electronic Engineering,Xiamen University,Xiamen,People’s Republic of China
Abstract:
CW laser emission on the quasi 3-level (4F3/2→4I9/2) transition in Nd:GGG is reported for different pump focusing and resonator dimensions. A nearly hemispherical plano-concave resonator led at 937.3 nm to a maximum output power of 4.1 W for an incident pump power of 21.7 W, thus corresponding to a slope efficiency of about 23.5%. Laser operation was also obtained for the first time around 933.6 nm by using a glass etalon for frequency selection with a maximum output power of 2.3 W and a slope efficiency of 16% with respect to the incident pump power. Dual-wavelength operation (around 933.6 and 937.3 nm), which offers a potential source to generate THz radiation, is also reported.
