Please use this identifier to cite or link to this item:
|Scopus||Web of Science®||Altmetric|
Full metadata record
|dc.identifier.citation||Optics Communications, 2010; 283(10):2301-2307||-|
|dc.description.abstract||Double-modulated terahertz differential time-domain spectroscopy (double-modulated THz-DTDS), is a technique that is based on dithering the sample under test. In this paper, we report a measurement technique based on mounting the sample on a spinning wheel, in order to overcome fundamental limitations imposed by linear dithering. We demonstrate a proof-of-principle showing that noise decreases as a function of the spinning wheel modulation frequency. This technique does not suffer the mechanical noise limitation of traditional linear dithering and thus opens up future scope for further noise reduction via hardware advances in the modulation frequency of the wheel. The spinning wheel technique enables a rapid succession of measurements between the reference and sample signals with a single mechanical delay scan. As a result, an improvement in measurement time by at least a factor of two, as compared to the conventional THz-TDS measurement technique is observed. The spinning wheel technique is experimentally verified by measuring the dielectric properties of a thick polymer material.||-|
|dc.description.statementofresponsibility||Jegathisvaran Balakrishnan, Bernd M. Fischer and Derek Abbott||-|
|dc.publisher||Elsevier Science BV||-|
|dc.rights||Crown copyright © 2010 Published by Elsevier B.V.||-|
|dc.subject||Differential time-domain spectroscopy||-|
|dc.title||Low noise spinning wheel technique for THz material parameter extraction||-|
|dc.identifier.orcid||Abbott, D. [0000-0002-0945-2674]||-|
|Appears in Collections:||Aurora harvest|
Electrical and Electronic Engineering publications
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.