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Optica, Biomedical Optics Express, 5(1), p. 1408, 2010

DOI: 10.1364/boe.1.001408

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High-throughput FCS using an LCOS spatial light modulator and an 8 × 1 SPAD array

Journal article published in 2010 by Ryan A. Colyer, Giuseppe Scalia, Ivan Rech, Angelo Gulinatti, Massimo Ghioni, Sergio Cova, Shimon Weiss, Xavier Michalet ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We present a novel approach to high-throughput Fluorescence Correlation Spectroscopy (FCS) which enables us to obtain one order of magnitude improvement in acquisition time. Our approach utilizes a liquid crystal on silicon spatial light modulator to generate dynamically adjustable focal spots, and uses an eight-pixel monolithic single-photon avalanche photodiode array. We demonstrate the capabilities of this system by showing FCS of Rhodamine 6G under various viscosities, and by showing that, with proper calibration of each detection channel, one order of magnitude improvement in acquisition speed is obtained. More generally, our approach will allow higher throughput single-molecule studies to be performed.