Diode-pumped 100-W green Nd:YAG rod laser.
We developed a diode-pumped high-average-power Nd:YAG green laser. By use of a monolithic diffusive reflector having three slits and a rod with low doping concentration, uniform distribution of excited Nd ions could be achieved. Uniform distribution in the rod reduced thermal birefringence. We employed a Z-shaped cavity to have a constant beam size at the frequency-doubling crystal independent of thermal lensing in the rod. The pulse width and green power dependence on the pump power were analyzed. A maximum green power of 101 W was obtained when the total pump power was 398 W. The optical-to-optical conversion efficiency was as high as 25.4%.
Yi
Jonghoon
J
Department of Physics, Yeungnam University, 214-1 Dae-Dong, Kyungsan, 712-749, Korea. jhyi@yu.ac.kr
Moon
Hee-Jong
HJ
Lee
Jongmin
J