New difference reflectance methods for study of small interfacial effects
Authors:
- 1 April 1979
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 50 (4) , 438-441
Abstract
Two sensitive differential optical techniques useful for study of small reflectance or absorptive differences between two interfaces are described. The first scheme employs a mechanically chopped light beam impinging on an arrangement of symmetrical dual cells to allow detection of differential reflectances DeltaR/R<10(-3). The second is a polarization-modulated beam-split laser version of the same method yielding approximately the same sensitivity. Representative measurements of voltage-induced reflectance changes at liquid-solid interfaces using these methods are given.Keywords
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