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In this paper a small Calcium beam optical frequency standard utilizing fully-sealed Calcium beam vacuum tube owning smaller size compared with vacuum system with flanges is demonstrated. Adopting the electron shelving detection method, we detect the clock transition 657 nm saturation absorbing spectroscopy whose linewidth is 500 kHz. The instability of this small optical frequency standard is 6.8×10...
The Ca beam optical frequency standard has the potential to be small optical clock like small Cs beam clock in microwave regime. For improving the signal-to-noise ratio of the clock transition spectroscopy, the electron shelving detection, which uses the fast 1S0-1P1 423nm transition to detect the narrow 1S0-3P1 657nm clock transition, was applied for Ca beam optical frequency standard. Therefore...
A merchandized optically pumped Cesium atomic clock has been realized in China recently. This clock was studied and designed under the support from Chinese National Key Scientific Instrument and Equipment Development Project. Experiencing the two steps of principal and engineering prototype, the clock starts to produce in small scale and comprehensively application tests by users. The tests show the...
Optical frequency standard is regarded as the future quantum frequency standard. With no laser cooling system, the calcium atomic beam optical frequency standard has the potential to be miniaturized and engineered, while providing a better performance than cesium clock and hydrogen clock. This paper presents the design and fabrication of a fully vacuum-sealed calcium beam tube with a smaller size...
By the National key scientific instrument and equipment development project from Chinese government, a commercial optically pumped Cesium atomic clock was launched in 2012, which is to manufacture a kind of Cesium clock for Telecom and other engineering application areas in China. A prototype of optically pumped Cesium atomic clock has been manufactured in Spaceon China. This clock includes three...
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