Paper
15 November 2018 The ultra-stable microwave based on ultra-stable laser
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Proceedings Volume 10964, Tenth International Conference on Information Optics and Photonics; 109642X (2018) https://doi.org/10.1117/12.2505864
Event: Tenth International Conference on Information Optics and Photonics (CIOP 2018), 2018, Beijing, China
Abstract
An ultra-stable microwave (USM) based on an ultra-stable laser (USL) and fiber optical frequency comb (OFC) is built at the National Institute of Metrology (NIM), China. The sum frequency of the carrier envelope offset frequency of FOFC and the beating frequency between the USL and FOFC is stabilized with an 100MHz microwave signal which is controlled by the H master. The error signal controls the pumping laser power through the pumping current and the cavity length by the piezoelectric transducer (PZT). Meanwhile, the error signal is send to the temperature control part of the optical resonant cavity for the long term stability. The stability of the USM is 1.33E-14 at 1s. The whole USM system is much robust, and can continuously running more than 30 days. This USM will be applied as the local oscillator for NIM5 Cs fountain to improve its short term stability.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shaoyang Dai, Fang Fang, Shiying Cao, Kun Liu, Nianfeng Liu, Weiliang Chen, and Tianchu Li "The ultra-stable microwave based on ultra-stable laser", Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109642X (15 November 2018); https://doi.org/10.1117/12.2505864
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KEYWORDS
Clocks

Cesium

Control systems

Oscillators

Fiber lasers

Frequency combs

Laser metrology

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