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- Title
Generation of an Attosecond Pulse Based on Collective Spontaneous Radiation Emission of a Layer of Three-Level Atoms Excited by a Pair of Unipolar Pulses.
- Authors
Arkhipov, R. M.; Arkhipov, M. V.; Babushkin, I.; Pakhomov, A. V.; Rosanov, N. N.
- Abstract
A method of coherent controlling the polarization of a medium has been proposed recently for the generation of extremely short pulses. The method is based on the excitation of atomic polarization oscillations and their subsequent stop using a pair of ultrashort pulses. The so-called stopped pulse of the polarization of a medium, which arises in the interval between its excitation and deexcitation, can be a source of an extremely short radiation pulse. In this work, the above-indicated possibility of generation of an isolated attosecond ultraviolet pulse in a three-level resonant medium whose parameters correspond to a hydrogen atom excited by a pair of unipolar X-ray pulses is considered theoretically. In this case, the generation mechanism is of the antenna-type, that is, it is caused by the collective spontaneous emission of pre-phased atoms in the absence of a noticeable decay of their free polarization.
- Subjects
ATTOSECOND pulses; X-rays; RADIATION; ATOMIC excitation; HYDROGEN atom
- Publication
Optics & Spectroscopy, 2020, Vol 128, Issue 11, p1857
- ISSN
0030-400X
- Publication type
Article
- DOI
10.1134/S0030400X20110028