Method for reconstructing spatial dependency coefficient of non-uniform field based on attosecond fringes

A non-uniform field and non-uniform technology, which is applied in the field of reconstructing the spatial dependence coefficient of non-uniform field based on attosecond fringes, can solve the problems that the light emission time is unclear and has not been studied.

Pending Publication Date: 2021-12-28
WUHAN INSTITUTE OF TECHNOLOGY
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Problems solved by technology

However, so far, single-photon ionization of atoms assisted by spatially inhomogeneous infrared fields has not been studied. How the inhomogeneous infrared field affects the light emission time is still unclear. No report

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  • Method for reconstructing spatial dependency coefficient of non-uniform field based on attosecond fringes
  • Method for reconstructing spatial dependency coefficient of non-uniform field based on attosecond fringes
  • Method for reconstructing spatial dependency coefficient of non-uniform field based on attosecond fringes

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Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] see figure 1 , embodiments of the present invention include.

[0044] A method of the present invention comprises the following steps:

[0045] S1. Measure the attosecond fringe spectrum generated by the interaction between the attosecond pulse and the working gas under the assistance of a non-uniform infrared electric field;

[0046] By numerically solving the time-dependent Schrödinger equation to record the non-uniform infrared field and a single attosecond pulse interacting with the working gas at different relative time delays, the momentum spectrum of the electron is obtained, which is the attosecond fringe spectrum.

[0047] S2. Perform weighted average on the attosecond fringe spectrum to obtain the central kinetic energy E of the attosecond fringe spectrum coe , the central momentum E coe According to the analytica...

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Abstract

The invention provides a method for reconstructing a spatial dependency coefficient of a non-uniform field based on attosecond fringes, and aims at an atomic single photon ionization process which is not researched in the prior art and is assisted by a non-uniform infrared field, and the function of reconstructing the spatial dependency coefficient of the non-uniform infrared field is realized through electron light radiation time. According to the invention, the dynamic process of electrons in atom single-photon ionization under the assistance of the non-uniform infrared field is reflected. The method is used for imaging the plasma enhanced electric field near a nanostructure.

Description

technical field [0001] The invention belongs to the technical field of ultrafast lasers, and in particular relates to a method for reconstructing the spatial dependence coefficient of an inhomogeneous field based on attosecond fringes. Background technique [0002] In recent years, with the rapid development of ultrafast laser technology, people have been able to realize the real-time detection of electron motion states in atoms, molecules and solids. The combination of attosecond pulses and infrared fields provides a very important method for studying single-photon ionization processes. Time-resolved spectra of electrons generated from this combined field can reveal temporal information about light emission. The light emission time was first observed by Schultze et al. They used the attosecond fringe technique, using isolated attosecond pulses and infrared fields to act on neon atoms, and measured the time delay of 2p relative to 2s electrons in neon atoms as 21as. The l...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/11G06F17/15G06F17/18
CPCG06F17/11G06F17/15G06F17/18
Inventor 王凤熊章涛廖青张茹
Owner WUHAN INSTITUTE OF TECHNOLOGY
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