Recent performance of alexandrite single- and double-pass amplifiers is described. Amplification factors of 5x per pass are reported at pulse energies of several joules/pulse and pulse powers exceeding 100 MW.
J. A. Pete,
D. F . Heller,
"Alexandrite Laser Amplifiers", Proc. SPIE 0622, High Power and Solid State Lasers, (23 June 1986); doi: 10.1117/12.961164; https://doi.org/10.1117/12.961164