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Proceedings Paper

Construction of high-resolution software correlator in photon correlation spectroscopy
Author(s): Guiqiang Liu; Guanling Yang; Siming Zeng
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Paper Abstract

A double-time model software correlator with 5ns time resolution was presented. This correlator includes 12 independent linear correlators. A simple algorithm used for counting the number of photon signals and computing the correlation function on line, was complied by using the graphical programming language Labview8.2. By using of a photomultiplier tube (PMT), a National Instruments Model PXI-5152 high-speed acquisition board, a National Instruments Model PXI-8105 control system, correlation functions can be worked out in real time over time scales of 5μs and processing in blocks down to time scales of ~10ms. Its performances were tested by using polystyrene spheres and silicon dioxide spheres diluted in water. These two kinds of nanoparticles are in different sizes. The correlation functions computed indicate that our correlator is feasible to compute the correlation functions in photon correlation spectroscopy (PCS).

Paper Details

Date Published: 8 January 2008
PDF: 6 pages
Proc. SPIE 6838, Optoelectronic Devices and Integration II, 68381U (8 January 2008); doi: 10.1117/12.756694
Show Author Affiliations
Guiqiang Liu, Jiangxi Normal Univ. (China)
Guanling Yang, South China Normal Univ. (China)
Siming Zeng, South China Normal Univ. (China)

Published in SPIE Proceedings Vol. 6838:
Optoelectronic Devices and Integration II
Xuping Zhang; Hai Ming; Maggie Yihong Chen, Editor(s)

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