Characterization of compact CPT Clocks based on a Cs-Ne microcell
| Autor: | Eric Kroemer, Christophe Gorecki, Philippe Abbe, Vincent Giordano, Ravinder Chutani, Rodolphe Boudot, Dietmar Wahl, Nicolas Passilly, Rainer Michalzik, Xiaochi Liu, Ahmed Al-Samaneh, Serge Galliou |
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| Přispěvatelé: | Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Department of optoelectronics, Universität Ulm - Ulm University [Ulm, Allemagne] |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Physics
business.industry 020208 electrical & electronic engineering Clock rate Buffer gas 02 engineering and technology 021001 nanoscience & nanotechnology Atomic clock Vertical-cavity surface-emitting laser Characterization (materials science) [SPI.TRON]Engineering Sciences [physics]/Electronics Reduction (complexity) Optics Light Shift 0202 electrical engineering electronic engineering information engineering Microcell 0210 nano-technology business |
| Zdroj: | EFTF Proceeding European Frequency and Time Forum European Frequency and Time Forum, Apr 2012, Gothenburg, Sweden. pp.3, ⟨10.1109/EFTF.2012.6502338⟩ |
| DOI: | 10.1109/EFTF.2012.6502338⟩ |
| Popis: | International audience; This paper reports the characterization of compact Cs CPT clocks based on a single buffer gas Cs-Ne microcell. Two different experimental set-ups are tested. The first set-up uses an externally-modulated 895 nm Distributed Feedback (DFB) laser source while the second one uses a directly-modulated custom-designed 895 nm Vertical Cavity Surface Emitting Laser (VCSEL) source. Using the DFB set-up, through reduction of the temperature-dependent collisional frequency shift and an active light shift suppression technique, a clock frequency stability of 3.8 × 10 -11 at 1 s and greatly better than 10 -11 at 60000 s is demonstrated. This proves the potential of single buffer gas Cs-Ne microfabricated cells for the development of miniature atomic clocks. Preliminar characterization of CPT resonances are reported with the VCSEL-based setup. It is expected that similar clock stability performances are achievable in this case. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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