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A simple fused silica light-guide assembly transmits 6 W concentrated solar power to a 2D-CPC cavity. The calculated laser power of 75.8 W is obtained for a 4 mm diameter Nd:YAG rod, reaching the conversion efficiency of 11W/m2.
We have realized palmtop and tunable THz-wave parametric generator and observed output THz-wave with tuning range of 1-3 THz, with power of more than 100 mW (peak), linewidth of less than 10 GHz.
Using a diode-pumped Q-switched Nd:YAG laser as the pump source, 198.5-nm was constructed. With 1.15 W of average power at 1064 nm, 12 mW of average output power was obtained at 198.5 nm.
Spark plug-size, passively Q-switched Cr:YAG/Nd:YAG micro-laser was developed for ignition of engines. Optical power intensity of >5TW/cm2 was obtained at the focal point and the enhanced combustion for leaner gas mixture was realized.
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