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Coherent combining of femtosecond pulses parametrically amplified in BBO crystals

机译:在BBO晶体中参数放大的飞秒脉冲的相干组合

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摘要

We report on the first experimental realization of coherent combining of parametrically amplified femtosecond pulses. The proposed and implemented two-loop active stabilization system allows us to achieve 110 as relative timing jitter between combined pulses, which is necessary for efficient coherent beam combining. In each channel of the two-channel laser setup, pulses were parametrically amplified in β-BaB_2O_4 (BBO) crystals to 50 μJ energy, compressed to 49 fs duration, and then coherently combined with efficiency as high as 97%. Currently, it is the shortest duration of amplified pulses for which coherent combining is demonstrated.
机译:我们报告参数放大飞秒脉冲的相干组合的第一个实验实现。提出并实施的两回路有源稳定系统使我们能够在组合脉冲之间实现110的相对定时抖动,这对于有效的相干光束组合是必需的。在两通道激光装置的每个通道中,将脉冲在β-BaB_2O_4(BBO)晶体中参数放大到50μJ能量,压缩到49 fs的持续时间,然后相干结合,效率高达97%。目前,这是最短的放大脉冲持续时间,证明了其相干合并。

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