Survey of Crystals for Multiple Pump Parameric Amplification for Petawatt Class Laser Systems

摘要

We present a survey of LBO, BBO, DKDP and YCOB crystals for broadband multiple beams pumped parametric amplification. We investigate such parameters as amplification efficiency, amplified pulse duration and parasitic radiation fraction as well as pump beams angular instability influence. We find that high second order nonlinearity enables high efficiency and low parasitic radiation fraction. Active angular stabilization of pump beams is demonstrated to be crucial for high coherent combining efficiency of amplified pulses.