A compact,discrete path Nd:YAG Innoslab laser amplifier system with novel eight-pass arrangement is developed.An electro-optic Q-switched oscillator using Nd∶YVO4 crystal as gain medium is used as the seed laser.With a seed laser power of 2.7 W at a repetition rate of 2 kHz,the amplified laser power of more than 13 W is achieved successfully with the pulse width of 15.5 ns,and the corresponding extraction efficiency is 14.6%.The experimentally measured laser beam quality factors are less than 1.7 and 1.5 in the x and y directions,respectively.Self-lasing and amplified spontaneous emission(ASE)are not observed at the maximum pump power with discrete-path laser amplifier configuration.
laser and laser opticsInnoslab laser amplifierNd∶YAGdiscrete path
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