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

苏丹丹 ¹江淼²

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作者信息

1. Key Laboratory for Laser Plasmas(Ministry of Education)and School of Physics and Astronomy,Collaborative Innovation Center for IFSA(CICIFSA),Shanghai Jiao Tong University,Shanghai 200240,China
2. School of Science,China University of Mining and Technology,Beijing 100083,China;State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology,Beijing 100083,China
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Abstract

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 2mc2,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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基金项目

国家自然科学基金(12304341)

国家自然科学基金(11974419)

国家重点研发计划(2021YFA1601700)

国家重点研发计划(2018YFA0404802)

中国科学院战略规划重点项目(XDA25051000)

出版年

2024

中国物理快报(英文版)

中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDEI

影响因子：0.515

ISSN：0256-307X

参考文献量31

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