TY - JOUR

T1 - 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

AU - Arkhipov, R. M.

AU - Arkhipov, M. V.

AU - Babushkin, I.

AU - Pakhomov, A. V.

AU - Rosanov, N. N.

N1 - Funding Information: We are grateful to Vl.V. Kocharovskii, E.R. Kocharovskaya, and S.A. Pul?kin for helpful discussions and valuable remarks.

PY - 2020

Y1 - 2020

N2 - 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.

AB - 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.

KW - attosecond pulses

KW - coherent control of atomic polarization

KW - collective spontaneous emission of radiation

KW - hydrogen atom

KW - unipolar pulses

KW - X-ray pulses

UR - http://www.scopus.com/inward/record.url?scp=85097275549&partnerID=8YFLogxK

U2 - 10.1134/S0030400X20110028

DO - 10.1134/S0030400X20110028

M3 - Article

AN - SCOPUS:85097275549

VL - 128

SP - 1857

EP - 1864

JO - Optics and spectroscopy

JF - Optics and spectroscopy

SN - 0030-400X

IS - 11

ER -