دورية أكاديمية
Continuous optical generation of microwave signals for fountain clocks.
| العنوان: | Continuous optical generation of microwave signals for fountain clocks. |
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| المؤلفون: | Lipphardt B, Walkemeyer P, Kazda M, Rahm J, Weyers S |
| المصدر: | Applied optics [Appl Opt] 2023 Oct 10; Vol. 62 (29), pp. 7628-7632. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Optica Publishing Group Country of Publication: United States NLM ID: 0247660 Publication Model: Print Cited Medium: Internet ISSN: 1539-4522 (Electronic) Linking ISSN: 1559128X NLM ISO Abbreviation: Appl Opt Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: | Publication: Washington, DC : Optica Publishing Group Original Publication: Easton, Pa., Optical Society of America. |
| مستخلص: | For the optical generation of ultrastable microwave signals for fountain clocks, we developed a setup based on a cavity stabilized laser and a commercial frequency comb. The robust system, in operation since 2020, is locked to a 100 MHz output frequency of a hydrogen maser and provides an ultrastable 9.6 GHz signal for the interrogation of atoms in two cesium fountain clocks, acting as primary frequency standards. Measurements reveal that the system provides a phase noise level that enables quantum projection noise limited fountain frequency instabilities at the low 10 -14 ( τ / s ) -1/2 level. At the same time, it offers largely maintenance-free operation. |
| تواريخ الأحداث: | Date Created: 20231019 Latest Revision: 20231020 |
| رمز التحديث: | 20240628 |
| DOI: | 10.1364/AO.503631 |
| PMID: | 37855470 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1539-4522 |
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| DOI: | 10.1364/AO.503631 |