Diode-pumped high-gain amplifier system

A LDA side-pumped high-gain amplifier system with a dual-pass geometry is reported in this paper. According to the requirement of ICF driver, four ring-LD side-pumping Nd3+:YLF amplifiers are used in this system. More than 106 gain are achieved when input pulse energy is several nJ at 1 053 nm, the output pulse has good energy stability and perfect near-field distribution.