A tunable and wide-range frequency-offset locking technology using external frequency modulation

Zhikun Jiang; Yanying Feng; Xueshu Yan; Shu Chen

doi:10.1117/12.2197068

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15 October 2015 A tunable and wide-range frequency-offset locking technology using external frequency modulation

Zhikun Jiang, Yanying Feng, Xueshu Yan, Shu Chen

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Proceedings Volume 9671, AOPC 2015: Advances in Laser Technology and Applications; 967104 (2015) https://doi.org/10.1117/12.2197068
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

In order to obtain frequency-locked laser beam with widely tunable frequency- offset used in a clod atom interferometer, a frequency stabilization method using a fiber electro-optic modulator (FEOM) is proposed. In this method, the laser passing through a FEOM can be locked with a wide-range frequency-offset, avoiding the frequency and power jitter caused by internal modulation on the current or PZT at the same time. To evaluate the outcome of this method, a beat signal between the frequency-shifted laser and the laser locked by Doppler-free Dichroic Atomic Vapor Laser Lock was measured. The analysis of the experimental results shows that the frequency-offset of the laser beam, with a full width at half maximum less than 1 MHz, can be tuned from 200 MHz to 10 GHz, which successfully meets the requirements of cold atom interferometer.

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Zhikun Jiang, Yanying Feng, Xueshu Yan, and Shu Chen "A tunable and wide-range frequency-offset locking technology using external frequency modulation", Proc. SPIE 9671, AOPC 2015: Advances in Laser Technology and Applications, 967104 (15 October 2015); https://doi.org/10.1117/12.2197068

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