Ms. Anqi Wang Profile

Anqi Wang

at Tsinghua Univ

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Proceedings Article | 24 October 2017 Paper

Laser frequency-offset locking based on the frequency modulation spectroscopy with higher harmonic detection

Anqi Wang, Zhixin Meng, Yanying Feng

Proceedings Volume 10457, 104572U (2017) https://doi.org/10.1117/12.2284949

KEYWORDS: Frequency modulation, Spectroscopy, Electrooptic modulators

Read Abstract +

We design a fiber electro-optic modulator (FEOM)-based laser frequency-offset locking system using frequency modulation spectroscopy (FMS) with the 3F modulation. The modulation signal and the frequency-offset control signal are simultaneously loaded on the FEOM by a mixer in order to suppress the frequency and power jitter caused by internal modulation on the current or piezoelectric ceramic transducer (PZT). It is expected to accomplish a fast locking, a widely tunable frequency-offset, a sensitive and rapid detection of narrow spectral features with the 3F modulation. The laser frequency fluctuation is limited to ±1MHz and its overlapping Allan deviation is around 10^-12 in twenty minutes, which successfully meets the requirements of the cold atom interferometer.

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