208-W TEM00 operation of a diode-pumped Nd:YAG rod laser.
208-W average-power TEM(00) -mode operation from a diode-pumped Nd:YAG rod laser was demonstrated. The side-pumping method of generating a high-gain aberration-free rod, the bifocusing-compensation technique with two identically pumped rods, and a suitable choice of beam spot size were employed in the design of this laser. At the maximum pump power of 1.1 kW the fundamental transverse-mode operation (M(2)<1.1) was characterized by 7.6% electrical efficiency. The extraction efficiency was almost 60% of full multimode operation. Stable operation was obtained within a pump-power range of 15% of the maximum pump power.
Hirano
Y
Y
Mitsubishi Electric Corporation, Information Technology Research and Development Center, 5-1-1 Ofuna, Kamakura, Kanagawa 247, Japan.
Koyata
Y
Y
Yamamoto
S
S
Kasahara
K
K
Tajime
T
T