High-Power Nd:GdVO4 Innoslab Continuous-Wave Laser under Direct 880 nm Pumping
DENG Bo1, ZHANG Heng-Li1**, XU Liu1, MAO Ye-Fei1, HE Jing-Liang2, XIN Jian-Guo1
1School of Optoelectronics, Beijing Institute of Technology, Beijing 100081 2State Key Laboratory of Crystal Materials, Shandong University, Jinan 250000
Abstract:A high-power cw end-pumped laser device is demonstrated with a slab crystal of Nd:GdVO4 operating at 1063 nm. Diode laser stacks at 880 nm are used to pump Nd:GdVO4 into emitting level 4F3/2. The 149 W output power is presented when the absorbed pump power is 390 W and the optical-to-optical conversion efficiency is 38.2%. When the output power is 120 W, the M2 factors are 2.3 in both directions. Additionally, mode overlap inside the resonator is analyzed to explain the beam quality deterioration.