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Currently, the output laser energy was enlarged mostly by using laser application technology
and different pump styles were used, which made the laser volume large. In this thesis, the output laser
energy was increased by improving the quality of laser crystal and using new style doped laser crystal,
which can increase the capacity usage ratio of solid laser, and the beam quality was improved as well. In
the paper, a new double-doped Nd:Ce:YAG laser crystal pumped by Xe-lamp and the plane-plane
resonant was used as main oscillator of laser. There were two advantages using the method. Firstly, the
absorption spectrum and emission band spectrum of Ce3+ were analyzed, which can create energy
transition between Ce3+ and Nd3+. The Ce3+ ion in double-doped laser crystal can absorb pump light at
ultraviolet band and create stimulated emission, which located at the absorption band of Nd3+ and made
more Nd3+ ion create energy level transition. The inverted population increased. As result the capacity
usage ratio of pumped energy was increased and the output energy of laser was enlarged. Secondly for the
advantage of the limitation of plane-plane resonant to laser beam was strong, the angle of divergence was
small at far field and the beam quality was good. Finally the pulsed laser energy was compressed to spike
pulse by using passive Q-switched, and the peak power was increased. The experiments were carried out
under the condition of passive Q-switched. When the input voltage was 800V, the laser beam was
obtained at the oscillator stage, whose output energy was 651.5mJ. The pulse width was 20ns. The slope
efficiency was 0.49%. Angle of divergence was better than 1.2 mrad. And peak power was 32.5KW. The
experiment result is accordant with theoretical analyses. This solid laser has important potential
application.
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