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Noise reduction by signal combination in Fourier space applied to drift correction in optical tweezers

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3 Author(s)
Mashaghi, Alireza ; AMOLF institute, Science Park 104, 1098XG Amsterdam, The Netherlands ; Vach, Peter J. ; Tans, Sander J.

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A general method is proposed to reduce noise by combining signals. Different measurements of the same physical quantity often exhibit different noise levels in different frequency ranges. Hence, a single high-fidelity signal can be constructed by combining the low-noise parts of the signals in Fourier space. We demonstrate this method by reducing noise in the measured bead-to-bead distance in an optical tweezers setup.

Published in:

Review of Scientific Instruments  (Volume:82 ,  Issue: 11 )