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arXiv · 0908.4465

Spatiotemporal heterodyne detection

Michael Atlan·Michel Gross
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Abstract

We describe a scheme into which a camera is turned into an efficient tunable frequency filter of a few Hertz bandwidth in an off-axis, heterodyne optical mixing configuration, enabling to perform parallel, high-resolution coherent spectral imaging. This approach is made possible through the combination of a spatial and temporal modulation of the signal to reject noise contributions. Experimental data obtained with dynamically scattered light by a suspension of particles in brownian motion is interpreted.

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Michael Atlan, Michel Gross. 2009-08-31. Spatiotemporal heterodyne detection. https://doi.org/10.1364/josaa.24.002701

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