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Amplitude and phase control of ultrashort pulses by use of an acousto-optic programmable dispersive filter: pulse compression and shaping

机译:通过使用声光可编程色散滤波器来控制超短脉冲的幅度和相位:脉冲压缩和整形

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摘要

We demonstrate experimentally that an arbitrary phase and amplitude profile can be applied to an ultrashort pulse by use of an acousto-optic programmable dispersive filter (AOPDF). Our filter has a large group-delay range that extends over 3 ps and a 30% diffraction efficiency over 150 THz. Experiments were conducted on a kilohertz chirped-pulse amplification laser chain capable of generating 30-fs pulses without additional pulse shaping. Compensating for gain narrowing and residual phase errors with an AOPDF in place of the stretcher results in 17-fs transform-limited pulses. Arbitrary shaping of these 17-fs pulses is also demonstrated in both the temporal and the spectral domains.
机译:我们通过实验证明,通过使用声光可编程色散滤波器(AOPDF),可以将任意相位和幅度曲线应用于超短脉冲。我们的滤波器具有较大的群延迟范围,可超过3 ps,并且在150 THz范围内具有30%的衍射效率。在能够产生30-fs脉冲而无需其他脉冲整形的千赫兹chi脉冲放大激光链上进行了实验。用AOPDF代替展宽器补偿增益变窄和残留相位误差会导致17-fs的变换限制脉冲。这些17-fs脉冲的任意整形也在时域和频谱域中得到了证明。

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