Flash-lamp-pumped 4 J, 50 Hz Nd:YAG nanosecond laser system for mobile and transportable equipment

A simplified flash-lamp pumped high-average-power Nd: YAG nanosecond laser system based on a master oscillator power amplifier platform was developed toward outside laser remote sensing. The performance of the laser system was demonstrated, obtaining 4 J output pulse energy with a 50 Hz operating frequency. Thermal lens effects were compensated for by using only simple image relays and up to 97% of the laser energy could be contained in the focal spot. The developed laser system was constructed using only components suitable for operation under outside conditions. (C) 2017 The Japan Society of Applied Physics