López-Ripa Miguel, Sola Íñigo J, Alonso Benjamín
Opt Express. 2023 Oct 9;31(21):34428-34442. doi: 10.1364/OE.500271.
In this work we broaden the amplitude modulation concept applied to the temporal characterization of ultrashort laser pulses with the amplitude swing technique. We theoretically study the effect of diverse types of relative amplitude and phase modulations. This variation of the replicas can be implemented by means of rotating zero-order waveplates to manipulate the delayed pulse replicas produced in a following multi-order waveplate, which can be more practical under certain conditions. We numerically simulate and study different scenarios under different modulations and for different noise levels and pulses. The proposed schemes are validated and compared through the experimental application to compressed and chirped pulses, confirming the applicability of the work. The simplicity, robustness and versatility of this ultrashort pulse measurement benefits the applications of ultrafast optics.
在这项工作中，我们通过振幅摆动技术拓宽了应用于超短激光脉冲时间表征的振幅调制概念。我们从理论上研究了不同类型的相对振幅和相位调制的影响。复制品的这种变化可以通过旋转零级波片来实现，以操纵在后续多级波片中产生的延迟脉冲复制品，这在某些条件下可能更具实用性。我们对不同调制、不同噪声水平和脉冲的不同场景进行了数值模拟和研究。通过对压缩脉冲和啁啾脉冲的实验应用，对所提出的方案进行了验证和比较，证实了这项工作的适用性。这种超短脉冲测量的简单性、稳健性和通用性有利于超快光学的应用。
