High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser field
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...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2017-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/aa7258 |
| _version_ | 1797750642337382400 |
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| author | Moustafa Abdel Hafiz Denis Brazhnikov Grégoire Coget Alexei Taichenachev Valeriy Yudin Emeric de Clercq Rodolphe Boudot |
| author_facet | Moustafa Abdel Hafiz Denis Brazhnikov Grégoire Coget Alexei Taichenachev Valeriy Yudin Emeric de Clercq Rodolphe Boudot |
| author_sort | Moustafa Abdel Hafiz |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-12T16:35:48Z |
| format | Article |
| id | doaj.art-b5079edfc22e41dd92fbaee84014eea9 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:35:48Z |
| publishDate | 2017-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-b5079edfc22e41dd92fbaee84014eea92023-08-08T14:53:54ZengIOP PublishingNew Journal of Physics1367-26302017-01-0119707302810.1088/1367-2630/aa7258High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser fieldMoustafa Abdel Hafiz0Denis Brazhnikov1Grégoire Coget2Alexei Taichenachev3Valeriy Yudin4Emeric de Clercq5Rodolphe Boudot6FEMTO-ST, CNRS, Université de Bourgogne Franche-Comté, 26 rue de l’épitaphe, F-25000 Besançon, FranceInstitute of Laser Physics SB RAS , Novosibirsk 630090, Russia; Novosibirsk State University , Novosibirsk 630090, RussiaFEMTO-ST, CNRS, Université de Bourgogne Franche-Comté, 26 rue de l’épitaphe, F-25000 Besançon, FranceInstitute of Laser Physics SB RAS , Novosibirsk 630090, Russia; Novosibirsk State University , Novosibirsk 630090, RussiaInstitute of Laser Physics SB RAS , Novosibirsk 630090, Russia; Novosibirsk State University , Novosibirsk 630090, Russia; Novosibirsk State Technical University , Novosibirsk 630073, RussiaLNE-SYRTE, Observatoire de Paris, PSL Research University , CNRS, Sorbonne Universités, UPMC Univ. Paris 06, 61 avenue de l’Observatoire, F-75014 Paris, FranceFEMTO-ST, CNRS, Université de Bourgogne Franche-Comté, 26 rue de l’épitaphe, F-25000 Besançon, FranceThe 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.https://doi.org/10.1088/1367-2630/aa7258Doppler-free spectroscopycoherent population trappingHanle effectvapor celldual-frequency laseroptical pumping |
| spellingShingle | Moustafa Abdel Hafiz Denis Brazhnikov Grégoire Coget Alexei Taichenachev Valeriy Yudin Emeric de Clercq Rodolphe Boudot High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser field New Journal of Physics Doppler-free spectroscopy coherent population trapping Hanle effect vapor cell dual-frequency laser optical pumping |
| title | High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser field |
| title_full | High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser field |
| title_fullStr | High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser field |
| title_full_unstemmed | High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser field |
| title_short | High-contrast sub-Doppler absorption spikes in a hot atomic vapor cell exposed to a dual-frequency laser field |
| title_sort | high contrast sub doppler absorption spikes in a hot atomic vapor cell exposed to a dual frequency laser field |
| topic | Doppler-free spectroscopy coherent population trapping Hanle effect vapor cell dual-frequency laser optical pumping |
| url | https://doi.org/10.1088/1367-2630/aa7258 |
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