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Proceedings Paper

Miniature Photon Correlation Spectrometer
Author(s): R. Ramnarine; E. R. Pike; M. Daniels
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Paper Abstract

A new solid-state miniaturized instrument is described for photon correlation spectroscopy and its application to macromolecular suspensions. The steady evolution of instrumentation for photon correlation spectroscopy since the sixties is well documented. Most instrumentation of such type has been rather large, consisting of bulk optics, gas lasers, a large sample chamber in a goniometer arrangement and a photomultiplier tube. The equipment is linked to a digital photon correlator. The present instrument is designed around state of the art technology. The gas laser is replaced by a 830 nm solid state laser, the bulk optics is replaced by miniature SELFOC lens and monomode optic fibres. The goniometer is replaced by a ring of monomode optical fibres at fixed angles and detection is by a photon-counting avalanche photodiode (APD) in the passive quenching geiger mode. Preliminary results on typical macromolecular suspensions will be presented.

Paper Details

Date Published: 22 December 1989
PDF: 11 pages
Proc. SPIE 1168, Current Developments in Optical Engineering and Commercial Optics, (22 December 1989); doi: 10.1117/12.963009
Show Author Affiliations
R. Ramnarine, King's College (United Kingdom)
E. R. Pike, Royal Signals and Radar Establishment, King's College (United Kingdom)
M. Daniels, King's College (United Kingdom)

Published in SPIE Proceedings Vol. 1168:
Current Developments in Optical Engineering and Commercial Optics
Robert E. Fischer; Harvey M. Pollicove; Warren J. Smith, Editor(s)

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