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Highspeed multiplexed heterodyne interferometry

Isleif, Katharina-S.; Gerberding, Oliver; Köhlenbeck, Sina; Sutton, Andrew; Sheard, Benjamin; Goßler, Stefan; Shaddock, Daniel; Heinzel, Gerhard; Danzmann, Karsten


Digitally enhanced heterodyne interferometry is a metrology technique that uses pseudo-random noise codes for modulating the phase of the laser light. Multiple interferometric signals from the same beam path can thereby be isolated based on their propagation delay, allowing one to use advantageous optical layouts in comparison to classic laser interferometers. We present here a high speed version of this technique for measuring multiple targets spatially separated by only a few...[Show more]

CollectionsANU Research Publications
Date published: 2014-10-06
Type: Journal article
Source: Optics Express
DOI: 10.1364/OE.22.024689


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