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Progress Toward an Atomic Clock Based on a Continuous Cold Rubidium Beam
2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2020We reported on the progress toward an atomic clock based on a continuous cold 87Rb atomic beam. The atomic beam source is generated directly from a 2D+ Magneto-Optical Trapping (MOT) with the flux of about 3×109 atoms/s and mean longitudinal velocity of 10 m/s. The beam had a free evolution time of 9 ms over the separated distance of 90 mm, producing a
Zhixin Meng +3 more
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Initial Tests of a Rubidium Space Cold Atom Clock
Chinese Physics Letters, 2016We report the initial test results of a rubidium (87Rb) space cold atom clock (SCAC). The space-qualified 87Rb SCAC is composed of the physical package, the optical bench, the microwave synthesizer and the control electronics. After the system is integrated, about 108 87Rb cold atoms are captured by magneto-optical trap.
Lin Li +11 more
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A Compact Laser System for the Pulsed Optically Pumped Rubidium Cell Atomic Clock
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2022We describe the design and implementation of a compact laser system for the pulsed optically pumped (POP) rubidium (Rb) cell atomic clock. The laser system includes packaged optics for sub-Doppler absorption, acousto-optic modulation and light beam expansion, and dedicated electronics for laser diode reliable single-mode operation and laser frequency ...
Zhijian Yu +5 more
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The rubidium atomic clock and basic research
Physics Today, 2007The vapor-cell atomic clock finds application today in the global positioning system and telecommunications. To improve and miniaturize the humble device for future applications will require a deeper understanding of atomic and chemical physics.
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Experiments on a semiconductor laser pumped rubidium atomic clock
IEEE Journal of Quantum Electronics, 1987Experiments were carried out to evaluate the performances of a semiconductor laser pumped rubidium (87Rb) atomic clock. Two kinds of Rb gas cells were used and their performances were compared [gas cell A (natural rubidium (87Rb/85Rb = \frac{3}{7} ) and buffer gases) and gas cell B (87Rb and buffer gases)].
M. Hashimoto, M. Ohtsu
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Highly reliable optical system for a rubidium space cold atom clock
Applied Optics, 2016We describe a highly reliable optical system designed for a rubidium space cold atom clock (SCAC), presenting its design, key technologies, and optical components. All of the optical and electronic components are integrated onto an optimized two-sided 300 mm×290 mm×30 mm optical bench.
Wei, Ren +8 more
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Progress of the Portable Rubidium Atomic Fountain Clock in SIOM
2013A portable 87Rb atomic fountain clock has been constructed and researched in Shanghai Institute of Optics and Fine Mechanics, and some improvements have been made recently. So far, comparison data with the H-maser shows that, the Allan deviation of the relative frequency stability of this fountain clock is 5.0 × 10−13τ−1/2, which reaches 2.6 × 10−15 at
Yuanbo Du +3 more
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Microwave interrogation cavity for the rubidium space cold atom clock
Chinese Physics B, 2016The performance of space cold atom clocks (SCACs) should be improved thanks to the microgravity environment in space. The microwave interrogation cavity is a key element in a SCAC. In this paper, we develop a microwave interrogation cavity especially for the rubidium SCAC.
Wei Ren +4 more
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Pulsed optically pumped rubidium atomic clock with optical detection
2008 Conference on Precision Electromagnetic Measurements Digest, 2008We describe the ongoing work on a 87Rb vapor-cell atomic clock using pulsed optical pumping with an optical detection technique. In order to eliminate the light shifts and to increase the stability of vapor-cell atomic clock, pulsed optical pumping technique has been used.
I. H. Choi +5 more
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Rubidium Atomic Clock with Improved Metrological Characteristics for Satellite Communication System
2017One of the essential elements of satellite communication system is an atomic clock. The proper operation of this system depends on the performance of atomic clock. In this paper one of the directions of modernization of the rubidium atomic clocks is considered. A new design of the frequency synthesis circuitry is presented.
Alexander A. Petrov +3 more
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