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arXiv · 1510.04397

Spatial interference of light: transverse coherence and the Alford and Gold effect

Flórez Jefferson·Álvarez Juan-Rafael·Calderón-Losada Omar·Salazar-Serrano Luis-José·Valencia Alejandra
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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.

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Flórez Jefferson, Álvarez Juan-Rafael, Calderón-Losada Omar, Salazar-Serrano Luis-José, Valencia Alejandra. 2015-10-15. Spatial interference of light: transverse coherence and the Alford and Gold effect. https://arxiv.org/abs/1510.04397

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