Efficient laser noise reduction by locking to an actively stabilized fiber interferometer with 10 km arm imbalance
Abstract
We report a laser noise reduction method by locking it to an actively stabilized fiber-based Mach Zehnder interferometer with 10 km optical fiber to achieve large arm imbalance. An acousto optic modulator is used for interferometer stabilization and heterodyne detection. The out-of-loop frequency noise is reduced by more than 90 dB for Fourier frequency at 1 Hz. This structure presents an efficient laser noise reduction method both at high Fourier frequency and low Fourier frequency. The signal of stabilized laser is transferred via a 10 km fiber link with a fractional frequency stability of 1.12 times 10-16 at 1 s. Compared with the fractional frequency stability of that when the interferometer is not stabilized, more than one order of magnitude is improved.
Keywords
Cite
@article{arxiv.1605.06934,
title = {Efficient laser noise reduction by locking to an actively stabilized fiber interferometer with 10 km arm imbalance},
author = {Dawei Li and Cheng Qian and Shanglin Li and Zhengbin Li and Jianye Zhao},
journal= {arXiv preprint arXiv:1605.06934},
year = {2016}
}
Comments
arXiv admin note: text overlap with arXiv:0901.4856 by other authors