摘要
The static laser performance of a-growth Nd：GdVO4 crystal （a-cut, 4 × 4 × 25 （mm）） at 1.34 μm pumped by flash-lamp is investigated with different transmissions of output couplers. With the output coupler transmission of T = 30%, the static output energy of 148 mJ is obtained when the pump energy is 35.2 J, and the corresponding electric-optical conversion efficiency is 0.42%. The Q-switched output of lasers with the output wavelength ranging from 1.3 to 1.6 μm can be realized by using Co^2＋ ：LaMgA11O19 （Co：LMA） as saturable absorber. A flash-lamp-pumped, passively Q-switched Nd：GdVO4 laser with Co：LMA as saturable absorber is demonstrated in piano-concave laser cavity. With the cavity length of 16.3 cm and pump energy of 19.8 J, the single-pulse output energy, pulse width, and peak power are obtained to be 4 m J, 80 ns, and 5 × 10^4 W, respectively.
The static laser performance of a-growth Nd：GdVO4 crystal （a-cut, 4 × 4 × 25 （mm）） at 1.34 μm pumped by flash-lamp is investigated with different transmissions of output couplers. With the output coupler transmission of T = 30%, the static output energy of 148 mJ is obtained when the pump energy is 35.2 J, and the corresponding electric-optical conversion efficiency is 0.42%. The Q-switched output of lasers with the output wavelength ranging from 1.3 to 1.6 μm can be realized by using Co^2＋ ：LaMgA11O19 （Co：LMA） as saturable absorber. A flash-lamp-pumped, passively Q-switched Nd：GdVO4 laser with Co：LMA as saturable absorber is demonstrated in piano-concave laser cavity. With the cavity length of 16.3 cm and pump energy of 19.8 J, the single-pulse output energy, pulse width, and peak power are obtained to be 4 m J, 80 ns, and 5 × 10^4 W, respectively.
基金
This work was supported by the National Natural Science Foundation of China under Grant No.90201017.
