Spatial interference of light: transverse coherence and the Alford and Gold effect
Optics
2016-02-08 v3
Abstract
We study the interference between two parallel-propagating Gaussian beams, originated from the same source, as their transverse separation is tuned. The interference pattern as a function of such separation lead us to determine the spatial coherence length of the original beam, in a similar way that a Michelson-Morley interferometer can be employed to measure the temporal coherence of a transform limited pulse. Moreover, performing a Fourier transform of the two-beam transverse plane, we observe an intensity modulation in the transverse momentum variable. This observation resembles the Alford and Gold Effect reported in time and frequency variables so far.
Keywords
Cite
@article{arxiv.1510.04397,
title = {Spatial interference of light: transverse coherence and the Alford and Gold effect},
author = {Flórez Jefferson and Álvarez Juan-Rafael and Calderón-Losada Omar and Salazar-Serrano Luis-José and Valencia Alejandra},
journal= {arXiv preprint arXiv:1510.04397},
year = {2016}
}