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Efficient amplification of a femtosecond Ti:sapphire laser with a ring regenerative amplifier

机译:飞秒Ti:蓝宝石激光器通过环形再生放大器的有效放大

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摘要

A high-stability and high-efficiency ring Ti:sapphire regenerative amplifier is demonstrated based on a double-gating pulse picker at a repetition rate of 1 kHz. Pulse energy up to 5.7 mJ is obtained using a pump energy of 20.0 mJ at 527 nm, corresponding to a relatively high slope efficiency of 30.3%. After a grating compressor, the laser pulse is compressed to 37.2 fs with an energy of 4.1 mJ. The beam quality factors M~2 are 1.4 and 1.3 in tangential and sagittal directions, respectively. The measured root mean square energy stability is better than 0.31% over an 11 h period.
机译:基于双选通脉冲拾取器,以1 kHz的重复频率展示了一种高稳定性和高效率的环形Ti:蓝宝石再生放大器。使用在527 nm处的20.0 mJ泵浦能量可获得高达5.7 mJ的脉冲能量,这对应于30.3%的相对较高的斜率效率。经过光栅压缩器后,激光脉冲以4.1 mJ的能量压缩到37.2 fs。光束质量因子M〜2在切线方向和弧矢方向分别为1.4和1.3。在11小时内测得的均方根能量稳定性优于0.31%。

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