Real-Time Observation of Instantaneous ac Stark Shift of a Vacuum Using a Zeptosecond Laser Pulse

被引：2

作者：

Su, Dandan ^{[1
]}

Jiang, Miao ^{[2
,3
,4
]}

机构：

[1] Shanghai Jiao Tong Univ, Minist Educ, Key Lab Laser Plasmas, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, CICIFSA, Sch Phys & Astron, Shanghai 200240, Peoples R China

[3] China Univ Min & Technol, Sch Sci, Beijing 100083, Peoples R China

[4] China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Beijing 100083, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2024年 / 41卷 / 01期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

FIELD;

D O I：

10.1088/0256-307X/41/1/014201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Based on the numerical solution of the time-dependent Dirac equation, we propose a method to observe in real time the ac Stark shift of a vacuum driven by an ultra-intense laser field. By overlapping the ultra-intense pump pulse with another zeptosecond probe pulse whose photon energy is smaller than 2mc 2, 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.

引用

页数：5

共 31 条

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