We present a chirped pulse amplification (CPA) Yb:YAG laser based on Innoslab amplifier and post pulse-compression technique to achieve an average power of 83 W at a repetition rate of 175 kH with pulse width of 38 fs. The diode laser pumped Innoslab amplifier with a plane-convex hybrid cavity efficiently suppressed the self-lasing to reach high power amplification, while achieve a nearly diffraction-limited beam quality. After the grating compressor, two stages of post-compression were used for shorter pulse width. The final compressed beam quality was characterized as M2=1.2, with a measured long time power stability of 0.28%.
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Liang et al. (2024) studied this question.
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