Improving output capability of high-power laser at short pulse duration using different laser glasses together in amplifier

The optical and laser properties of several laser glasses have been discussed. According to the properties of the gain and the B integral in the high power laser amplifier chain,an optimal configuration is advanced that high gain glasses and low n2 glases are used in the different amplifier stages simultaneously. In this way, the restriction of the B integral effect to the maximal output capability can be weaken and the output capability difference between short pulses and long pulses can be decreased.The simulated result shows that the optimal configuration can potentially provide a 30%~40% output energy improvement as compared with the present configuration at 1 ns．