Interaction of Phase-Modulated Femtosecond Pulses with an Optically Dense Quasi-Resonant Medium of Rubidium Vapors

S. N. Bagaev, A. A. Preobrazhenskaya, N. A. Timofeev, A. A. Pastor, I. B. Mekhov, I. A. Chekhonin, P. Yu Serdobintsev, V. S. Egorov, M. A. Chekhonin, A. M. Mashko

Research output

Abstract

Abstract: For the first time, it is demonstrated that the magnitude and sign of the effect of “spectral condensation” of a laser pulse at the resonant-transition frequency of a dense medium can be controlled by changing the driving-pulse parameters (chirp, pulse width, and pulse amplitude). In the process of this, importantly, the driving-pulse energy and spectrum remain unchanged. Direct time-resolved measurements revealed an oscillatory character of the induced superradiance of rubidium vapors representing a long train of decaying short pulses. The width and repetition rate of the pulses in the train are determined by atomic density N 0 of the medium, while the width of an entire superradiance pulse (10 ps) is considerably larger than that of the driving laser pulse (50 fs).

Original languageEnglish
Pages (from-to)667-672
Number of pages6
JournalOptics and Spectroscopy (English translation of Optika i Spektroskopiya)
Volume125
Issue number5
DOIs
Publication statusPublished - 1 Nov 2018

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Rubidium
rubidium
Ultrashort pulses
Superradiance
Laser pulses
Vapors
vapors
pulses
interactions
Time measurement
Condensation
pulse amplitude
chirp
lasers
repetition
pulse duration
condensation
time measurement

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

Cite this

@article{e56595a8e6414c8b9b1a666774c4bd0b,
title = "Interaction of Phase-Modulated Femtosecond Pulses with an Optically Dense Quasi-Resonant Medium of Rubidium Vapors",
abstract = "Abstract: For the first time, it is demonstrated that the magnitude and sign of the effect of “spectral condensation” of a laser pulse at the resonant-transition frequency of a dense medium can be controlled by changing the driving-pulse parameters (chirp, pulse width, and pulse amplitude). In the process of this, importantly, the driving-pulse energy and spectrum remain unchanged. Direct time-resolved measurements revealed an oscillatory character of the induced superradiance of rubidium vapors representing a long train of decaying short pulses. The width and repetition rate of the pulses in the train are determined by atomic density N 0 of the medium, while the width of an entire superradiance pulse (10 ps) is considerably larger than that of the driving laser pulse (50 fs).",
author = "Bagaev, {S. N.} and Preobrazhenskaya, {A. A.} and Timofeev, {N. A.} and Pastor, {A. A.} and Mekhov, {I. B.} and Chekhonin, {I. A.} and Serdobintsev, {P. Yu} and Egorov, {V. S.} and Chekhonin, {M. A.} and Mashko, {A. M.}",
year = "2018",
month = "11",
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doi = "10.1134/S0030400X1811005X",
language = "English",
volume = "125",
pages = "667--672",
journal = "OPTICS AND SPECTROSCOPY",
issn = "0030-400X",
publisher = "Pleiades Publishing",
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TY - JOUR

T1 - Interaction of Phase-Modulated Femtosecond Pulses with an Optically Dense Quasi-Resonant Medium of Rubidium Vapors

AU - Bagaev, S. N.

AU - Preobrazhenskaya, A. A.

AU - Timofeev, N. A.

AU - Pastor, A. A.

AU - Mekhov, I. B.

AU - Chekhonin, I. A.

AU - Serdobintsev, P. Yu

AU - Egorov, V. S.

AU - Chekhonin, M. A.

AU - Mashko, A. M.

PY - 2018/11/1

Y1 - 2018/11/1

N2 - Abstract: For the first time, it is demonstrated that the magnitude and sign of the effect of “spectral condensation” of a laser pulse at the resonant-transition frequency of a dense medium can be controlled by changing the driving-pulse parameters (chirp, pulse width, and pulse amplitude). In the process of this, importantly, the driving-pulse energy and spectrum remain unchanged. Direct time-resolved measurements revealed an oscillatory character of the induced superradiance of rubidium vapors representing a long train of decaying short pulses. The width and repetition rate of the pulses in the train are determined by atomic density N 0 of the medium, while the width of an entire superradiance pulse (10 ps) is considerably larger than that of the driving laser pulse (50 fs).

AB - Abstract: For the first time, it is demonstrated that the magnitude and sign of the effect of “spectral condensation” of a laser pulse at the resonant-transition frequency of a dense medium can be controlled by changing the driving-pulse parameters (chirp, pulse width, and pulse amplitude). In the process of this, importantly, the driving-pulse energy and spectrum remain unchanged. Direct time-resolved measurements revealed an oscillatory character of the induced superradiance of rubidium vapors representing a long train of decaying short pulses. The width and repetition rate of the pulses in the train are determined by atomic density N 0 of the medium, while the width of an entire superradiance pulse (10 ps) is considerably larger than that of the driving laser pulse (50 fs).

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DO - 10.1134/S0030400X1811005X

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SN - 0030-400X

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