Study on LD side-pumped Nd:YAG slab double-pass amplifier

Diode laser arrays side-pumped Nd:YAG slab double-pass laser power amplifier is studied in the paper .Experimental results and numerical simulations of laser performance are presented. MOPA system has been built up using gaussian beam as source. Over 51.9mJ energy per pulse at 100Hz repetition rate is achieved. Beam quality M2 is less than 2.The fluctuation of the laser output energy is less than 2%.The result shows that the experimental data have been consistent with the numerical calculation results.