使用zeptosecond激光脉冲实时观测真空的瞬时交流斯塔克偏移

IF 3.5 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Chinese Physics Letters Pub Date : 2023-12-13 DOI:10.1088/0256-307x/41/1/014201

Dandan Su, Miao Jiang

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引用次数: 0

摘要

基于时间相关狄拉克方程的数值解法，我们提出了一种实时观测超强激光场驱动真空的交流斯塔克偏移的方法。通过将超强泵浦脉冲与另一个光子能量小于 2mc 2 的zeptosecond 探针脉冲重叠，可以通过调整泵浦脉冲和探针脉冲之间的时间延迟来控制电子-正电子对的产生。由于电子对产生率敏感地依赖于瞬时真空电势，因此我们可以根据依赖于时间延迟的电子对产生率重建真空电势的交流斯塔克偏移。

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Real-time observation of the instantaneous ac Stark shift of vacuum using a zeptosecond laser pulse

Based on the numerical solution of the time-dependent Dirac equation, we propose a method to real-timely observe the ac Stark shift of vacuum driven by an ultraintense laser field. By overlapping the ultraintense pump pulse with another zeptosecond probe pulse whose photon energy is smaller than 2mc 2, the electron-positron pair creation can be controlled by tuning the time delay between the pump and probe pulses. Since the pair creation rate depends sensitively on the instantaneous vacuum potential, one can reconstruct the ac Stark shift of the vacuum potential according to the time delay-dependent pair creation rate.

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来源期刊

Chinese Physics Letters 物理-物理：综合

CiteScore

5.90

自引率

8.60%

发文量

13238

审稿时长

4 months

期刊介绍： Chinese Physics Letters provides rapid publication of short reports and important research in all fields of physics and is published by the Chinese Physical Society and hosted online by IOP Publishing.