Correlated self-heterodyne method for ultra-low-noise laser linewidth measurements
Optics
2022-06-20 v2 Instrumentation and Detectors
Abstract
Narrow-linewidth lasers are important to many applications spanning precision metrology to sensing systems. Characterization of these lasers requires precise measurements of their frequency noise spectra. Here we demonstrate a correlated self-heterodyne (COSH) method capable of measuring frequency noise as low as 0.01 Hz/Hz at 1 MHz offset frequency. The measurement setup is characterized by both commercial and lab-built lasers, and features low optical power requirements, fast acquisition time and high intensity noise rejection.
Keywords
Cite
@article{arxiv.2010.09248,
title = {Correlated self-heterodyne method for ultra-low-noise laser linewidth measurements},
author = {Zhiquan Yuan and Heming Wang and Peng Liu and Bohan Li and Boqiang Shen and Maodong Gao and Lin Chang and Warren Jin and Avi Feshali and Mario Paniccia and John Bowers and Kerry Vahala},
journal= {arXiv preprint arXiv:2010.09248},
year = {2022}
}
Comments
10 pages, 6 figures