Characterization of atomic spin polarization lifetime of cesium vapor cells with neon buffer gas
The dephasing time of spin-polarized atoms in an atomic vapor cell plays an important role in determining the stability of vapor-cell clocks as well as the sensitivity of optically-pumped magnetometers. The presence of a buffer gas can extend the lifetime of these atoms. Many vapor cell systems oper...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2018-02-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5010294 |
| _version_ | 1828393568401620992 |
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| author | Janet W. Lou Geoffrey A. Cranch |
| author_facet | Janet W. Lou Geoffrey A. Cranch |
| author_sort | Janet W. Lou |
| collection | DOAJ |
| description | The dephasing time of spin-polarized atoms in an atomic vapor cell plays an important role in determining the stability of vapor-cell clocks as well as the sensitivity of optically-pumped magnetometers. The presence of a buffer gas can extend the lifetime of these atoms. Many vapor cell systems operate at a fixed (often elevated) temperature. For ambient temperature operation with no temperature control, it is necessary to characterize the temperature dependence as well. We present a spin-polarization lifetime study of Cesium vapor cells with different buffer gas pressures, and find good agreement with expectations based on the combined effects of wall collisions, spin exchange, and spin destruction. For our (7.5 mm diameter) vapor cells, the lifetime can be increased by two orders of magnitude by introducing Ne buffer gas up to 100 Torr. Additionally, the dependence of the lifetime on temperature is measured (25 - 47 oC) and simulated for the first time to our knowledge with reasonable agreement. |
| first_indexed | 2024-12-10T07:41:14Z |
| format | Article |
| id | doaj.art-47588b3f39064ec7b2b3bf99e61ab73e |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-10T07:41:14Z |
| publishDate | 2018-02-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-47588b3f39064ec7b2b3bf99e61ab73e2022-12-22T01:57:18ZengAIP Publishing LLCAIP Advances2158-32262018-02-0182025305025305-810.1063/1.5010294024802ADVCharacterization of atomic spin polarization lifetime of cesium vapor cells with neon buffer gasJanet W. Lou0Geoffrey A. Cranch1Optical Sciences Division, U.S. Naval Research Laboratory, 4555 Overlook Ave., S.W., Washington, DC 20375, USAOptical Sciences Division, U.S. Naval Research Laboratory, 4555 Overlook Ave., S.W., Washington, DC 20375, USAThe dephasing time of spin-polarized atoms in an atomic vapor cell plays an important role in determining the stability of vapor-cell clocks as well as the sensitivity of optically-pumped magnetometers. The presence of a buffer gas can extend the lifetime of these atoms. Many vapor cell systems operate at a fixed (often elevated) temperature. For ambient temperature operation with no temperature control, it is necessary to characterize the temperature dependence as well. We present a spin-polarization lifetime study of Cesium vapor cells with different buffer gas pressures, and find good agreement with expectations based on the combined effects of wall collisions, spin exchange, and spin destruction. For our (7.5 mm diameter) vapor cells, the lifetime can be increased by two orders of magnitude by introducing Ne buffer gas up to 100 Torr. Additionally, the dependence of the lifetime on temperature is measured (25 - 47 oC) and simulated for the first time to our knowledge with reasonable agreement.http://dx.doi.org/10.1063/1.5010294 |
| spellingShingle | Janet W. Lou Geoffrey A. Cranch Characterization of atomic spin polarization lifetime of cesium vapor cells with neon buffer gas AIP Advances |
| title | Characterization of atomic spin polarization lifetime of cesium vapor cells with neon buffer gas |
| title_full | Characterization of atomic spin polarization lifetime of cesium vapor cells with neon buffer gas |
| title_fullStr | Characterization of atomic spin polarization lifetime of cesium vapor cells with neon buffer gas |
| title_full_unstemmed | Characterization of atomic spin polarization lifetime of cesium vapor cells with neon buffer gas |
| title_short | Characterization of atomic spin polarization lifetime of cesium vapor cells with neon buffer gas |
| title_sort | characterization of atomic spin polarization lifetime of cesium vapor cells with neon buffer gas |
| url | http://dx.doi.org/10.1063/1.5010294 |
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