Time Dependence of Resonant Photoprocesses Induced by Electromagnetic Pulses with Various Durations

The time dependence (on the pulse duration and on current time) of resonant photoprocesses induced by electromagnetic pulses of various durations (including ultrashort and quasi-monochromatic pulses) is analyzed using perturbation theory. Pulses with the Gaussian and exponential envelopes, as well a...

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Bibliographic Details
Published in:Journal of experimental and theoretical physics 2022-07, Vol.135 (1), p.1-8
Main Author: Astapenko, V. A.
Format: Article
Language:English
Subjects:
Analysis
Atoms
Classical and Quantum Gravitation
Cross-sections
Electromagnetic pulses
Electromagnetism
Elementary Particles
Molecules
Optics
Particle and Nuclear Physics
Perturbation theory
Physics
Physics and Astronomy
Pulse duration
Pulse shape
Quantum Field Theory
Relativity Theory
Solid State Physics
Time dependence
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Summary:The time dependence (on the pulse duration and on current time) of resonant photoprocesses induced by electromagnetic pulses of various durations (including ultrashort and quasi-monochromatic pulses) is analyzed using perturbation theory. Pulses with the Gaussian and exponential envelopes, as well as the Lorentzian and Gaussian spectral profiles of a photoprocess cross section are considered. Simple analytic expressions are obtained for the probability in the long-time limit. The time dependence for a given pulse duration is investigated analytically in the monochromatic and ultrashort limits and numerically for intermediate values of parameters. Specific features of the temporal dynamics, which are common for resonant photoprocesses and depend on the pulse shape and the spectral cross section profile are established.
ISSN:1063-7761
1090-6509
DOI:10.1134/S106377612206005X