Ultracold molecular spectroscopy: toward the narrow-line cooling of molecules
A new spectroscopic method that utilizes microwave transition of ultracold molecules is demonstrated. The narrow spectral linewidth (approximately 100 Hz) was guaranteed by preparing molecules at low temperature, and a high signal-to-noise ratio was achieved by preparing a significant fraction of mo...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2015-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/17/3/035013 |
| _version_ | 1797751126915809280 |
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| author | Jun Kobayashi Atsushi Ogino Shin Inouye |
| author_facet | Jun Kobayashi Atsushi Ogino Shin Inouye |
| author_sort | Jun Kobayashi |
| collection | DOAJ |
| description | A new spectroscopic method that utilizes microwave transition of ultracold molecules is demonstrated. The narrow spectral linewidth (approximately 100 Hz) was guaranteed by preparing molecules at low temperature, and a high signal-to-noise ratio was achieved by preparing a significant fraction of molecules in the target internal state. The repetition rate of the experiment was approximately 10 Hz, which was only limited by the time needed to load ultracold atoms into the magneto-optical trap. To demonstrate the performance, we investigated the hyperfine structures of the vibrational ground states of the ${{X}^{1}}{{\Sigma }^{+}}$ and ${{b}^{3}}{{\Pi }_{{{0}^{+}}}}$ states of KRb molecules. This technique not only allows us to pursue the narrow-line laser cooling of KRb molecules, but also provided us with essential information for realizing precision spectroscopies e.g., the search for the temporal variation of the electron-to-proton mass ratio. |
| first_indexed | 2024-03-12T16:43:56Z |
| format | Article |
| id | doaj.art-d15b8bbc539a47fe966c4636a7192be7 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:43:56Z |
| publishDate | 2015-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-d15b8bbc539a47fe966c4636a7192be72023-08-08T14:21:02ZengIOP PublishingNew Journal of Physics1367-26302015-01-0117303501310.1088/1367-2630/17/3/035013Ultracold molecular spectroscopy: toward the narrow-line cooling of moleculesJun Kobayashi0Atsushi Ogino1Shin Inouye2School of Engineering, The University of Tokyo , Yayoi, Bunkyo-ku, Tokyo 113-8656, Japan; Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, JapanSchool of Engineering, The University of Tokyo , Yayoi, Bunkyo-ku, Tokyo 113-8656, JapanSchool of Engineering, The University of Tokyo , Yayoi, Bunkyo-ku, Tokyo 113-8656, JapanA new spectroscopic method that utilizes microwave transition of ultracold molecules is demonstrated. The narrow spectral linewidth (approximately 100 Hz) was guaranteed by preparing molecules at low temperature, and a high signal-to-noise ratio was achieved by preparing a significant fraction of molecules in the target internal state. The repetition rate of the experiment was approximately 10 Hz, which was only limited by the time needed to load ultracold atoms into the magneto-optical trap. To demonstrate the performance, we investigated the hyperfine structures of the vibrational ground states of the ${{X}^{1}}{{\Sigma }^{+}}$ and ${{b}^{3}}{{\Pi }_{{{0}^{+}}}}$ states of KRb molecules. This technique not only allows us to pursue the narrow-line laser cooling of KRb molecules, but also provided us with essential information for realizing precision spectroscopies e.g., the search for the temporal variation of the electron-to-proton mass ratio.https://doi.org/10.1088/1367-2630/17/3/035013cold moleculelaser coolingspectroscopy |
| spellingShingle | Jun Kobayashi Atsushi Ogino Shin Inouye Ultracold molecular spectroscopy: toward the narrow-line cooling of molecules New Journal of Physics cold molecule laser cooling spectroscopy |
| title | Ultracold molecular spectroscopy: toward the narrow-line cooling of molecules |
| title_full | Ultracold molecular spectroscopy: toward the narrow-line cooling of molecules |
| title_fullStr | Ultracold molecular spectroscopy: toward the narrow-line cooling of molecules |
| title_full_unstemmed | Ultracold molecular spectroscopy: toward the narrow-line cooling of molecules |
| title_short | Ultracold molecular spectroscopy: toward the narrow-line cooling of molecules |
| title_sort | ultracold molecular spectroscopy toward the narrow line cooling of molecules |
| topic | cold molecule laser cooling spectroscopy |
| url | https://doi.org/10.1088/1367-2630/17/3/035013 |
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