Overcoming the speckle correlation limit to achieve a fiber wavemeter with attometer resolution
Optics
2019-09-04 v1 Instrumentation and Detectors
Abstract
The measurement of the wavelength of light using speckle is a promising tool for the realization of compact and precise wavemeters and spectrometers. However, the resolution of these devices is limited by strong correlations between the speckle patterns produced by closely-spaced wavelengths. Here, we show how principal component analysis of speckle images provides a route to overcome this limit. Using this, we demonstrate a compact wavemeter which measures wavelength changes of a stabilized diode laser of 5.3 am, eight orders of magnitude below the speckle correlation limit.
Keywords
Cite
@article{arxiv.1909.00666,
title = {Overcoming the speckle correlation limit to achieve a fiber wavemeter with attometer resolution},
author = {Graham D. Bruce and Laura O'Donnell and Mingzhou Chen and Kishan Dholakia},
journal= {arXiv preprint arXiv:1909.00666},
year = {2019}
}
Comments
5 pages, 4 figures