Slab Yb:YAG pulse amplifier with high amplification gain and signal-to-noise ratio
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This study experimentally investigated a Yb: YAG pulse laser amplifier with a high amplification gain and a high signal-to-noise ratio (SNR). The highest amplification gain of 172 and highest pulse energy of 131 mJ were obtained with the highest SNR of 24.9 dB from a volume gain of 10 mm × 10 mm × 1 mm. The output beam quality values of M x 2 = 1:91 in the slow axis and M y 2 = 1:58 in the fast axis were also achieved.
Keywordslaser amplifiers ytterbium lasers diodepumped lasers signal-to-noise ratio (SNR)
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This work was supported by the National High-Tech R&D Program 863-804 (Nos. 2012AA8042039, 2013AA8042039 and 2014AA8042039).
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