Spatiotemporal heterodyne detection

Details Spatiotemporal heterodyne detection Spatiotemporal heterodyne detection

2009-08-31

arxiv.org/abs/0908.4465v1

Journal of the Optical Society of America A 24 (2007) 2701-2709

Physics

Optics

Scientific paper

10.1364/JOSAA.24.002701

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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