Experimental Study of Laser Amplifier Based on LDA side-pumping Nd:Glass

摘要

A high beam quality and high stability laser amplifier baseing on LDA side-pumping Nd-Glass which applied to amplify a nanosecond laser pulse source has been developed in the paper. In addition, Liquid crystal spatial light modulator is used in the amplifier for spatial beam shaping so as to improve the near-field uniformity. When the flat top pules with the pulse width of 3ns and energy of 500nJ are injected as the seed pulse, the average output energy of the laser amplifier is 100mJ. The modulation degree near field is less than 1.22:1, and the beam angle drifting of the far-field laser is less than 10 μrad.