High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser field

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High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser field. / Abdel Hafiz, Moustafa; Brazhnikov, Denis; Coget, Grégoire et al.

In: New Journal of Physics, Vol. 19, No. 7, 073028, 25.07.2017.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{523805ff44fa44a9a65119ff392c9d48,

title = "High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser field",

abstract = "The saturated absorption technique is an elegant method widely used in atomic and molecular physics for high-resolution spectroscopy, laser frequency standards and metrology purposes. We have recently discovered that a saturated absorption scheme with a dual-frequency laser can lead to a significant sign reversal of the usual Doppler-free dip, yielding a deep enhanced-absorption spike. In this paper, we report detailed experimental investigations of this phenomenon, together with a full in-depth theoretical description. It is shown that several physical effects can support or oppose the formation of the high-contrast central spike in the absorption profile. The physical conditions for which all these effects act constructively and result in very bright Doppler-free resonances are revealed. Apart from their theoretical interest, results obtained in this manuscript are of great interest for laser spectroscopy and laser frequency stabilization purposes, with applications in laser cooling, matter-wave sensors, atomic clocks or quantum optics.",

keywords = "coherent population trapping, Doppler-free spectroscopy, dual-frequency laser, Hanle effect, optical pumping, vapor cell, D-1 LINE, COUNTERPROPAGATING LIGHT WAVES, DARK RESONANCES, D2 LINE, D1 LINE, DIODE-LASERS, SATURATION SPECTROSCOPY, POLARIZATION, RB-87",

author = "{Abdel Hafiz}, Moustafa and Denis Brazhnikov and Gr{\'e}goire Coget and Alexei Taichenachev and Valeriy Yudin and {De Clercq}, Emeric and Rodolphe Boudot",

note = "Publisher Copyright: {\textcopyright} 2017 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.",

year = "2017",

month = jul,

day = "25",

doi = "10.1088/1367-2630/aa7258",

language = "English",

volume = "19",

journal = "New Journal of Physics",

issn = "1367-2630",

publisher = "IOP Publishing Ltd.",

number = "7",

}

RIS

TY - JOUR

T1 - High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser field

AU - Abdel Hafiz, Moustafa

AU - Brazhnikov, Denis

AU - Coget, Grégoire

AU - Taichenachev, Alexei

AU - Yudin, Valeriy

AU - De Clercq, Emeric

AU - Boudot, Rodolphe

PY - 2017/7/25

Y1 - 2017/7/25

N2 - The saturated absorption technique is an elegant method widely used in atomic and molecular physics for high-resolution spectroscopy, laser frequency standards and metrology purposes. We have recently discovered that a saturated absorption scheme with a dual-frequency laser can lead to a significant sign reversal of the usual Doppler-free dip, yielding a deep enhanced-absorption spike. In this paper, we report detailed experimental investigations of this phenomenon, together with a full in-depth theoretical description. It is shown that several physical effects can support or oppose the formation of the high-contrast central spike in the absorption profile. The physical conditions for which all these effects act constructively and result in very bright Doppler-free resonances are revealed. Apart from their theoretical interest, results obtained in this manuscript are of great interest for laser spectroscopy and laser frequency stabilization purposes, with applications in laser cooling, matter-wave sensors, atomic clocks or quantum optics.

AB - The saturated absorption technique is an elegant method widely used in atomic and molecular physics for high-resolution spectroscopy, laser frequency standards and metrology purposes. We have recently discovered that a saturated absorption scheme with a dual-frequency laser can lead to a significant sign reversal of the usual Doppler-free dip, yielding a deep enhanced-absorption spike. In this paper, we report detailed experimental investigations of this phenomenon, together with a full in-depth theoretical description. It is shown that several physical effects can support or oppose the formation of the high-contrast central spike in the absorption profile. The physical conditions for which all these effects act constructively and result in very bright Doppler-free resonances are revealed. Apart from their theoretical interest, results obtained in this manuscript are of great interest for laser spectroscopy and laser frequency stabilization purposes, with applications in laser cooling, matter-wave sensors, atomic clocks or quantum optics.

KW - coherent population trapping

KW - Doppler-free spectroscopy

KW - dual-frequency laser

KW - Hanle effect

KW - optical pumping

KW - vapor cell

KW - D-1 LINE

KW - COUNTERPROPAGATING LIGHT WAVES

KW - DARK RESONANCES

KW - D2 LINE

KW - D1 LINE

KW - DIODE-LASERS

KW - SATURATION SPECTROSCOPY

KW - POLARIZATION

KW - RB-87

UR - http://www.scopus.com/inward/record.url?scp=85026820309&partnerID=8YFLogxK

U2 - 10.1088/1367-2630/aa7258

DO - 10.1088/1367-2630/aa7258

M3 - Article

AN - SCOPUS:85026820309

VL - 19

JO - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

IS - 7

M1 - 073028

ER -

ID: 8679845