Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/35263
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Type: Conference paper
Title: Investigation on improving the noise performance of T-ray liquid spectroscopy via double-modulated differential time-domain spectroscopy
Author: Balakrishnan, J.
Fischer, B.
Mickan, S.
Abbott, D.
Citation: Biomedical applications of micro- and nanoengineering III : 11-13 December 2006, Adelaide, Australia / Dan V. Nicolau (eds.), pp. 64160V 1-7
Publisher: SPIE
Publisher Place: USA
Issue Date: 2006
Series/Report no.: Proceedings of SPIE--the International Society for Optical Engineering ; 6416.
ISBN: 0819465240
9780819465245
ISSN: 0277-786X
Conference Name: Smart Materials, Nano- & Micro-Smart Systems (2006 : Adelaide, Australia)
Statement of
Responsibility: 
J. Balakrishnan, B. M. Fischer, S. P. Mickan, and D. Abbott
Abstract: Liquid spectroscopy allows analysis of chemical composition and provides a better understanding of the solvation dynamics of various types of liquids. Although it has been shown that liquid spectroscopy using T-rays is feasible, liquid water absorption is still considered to be one of the most challenging problems facing THz imaging and spectroscopy in biomedical applications. The absorption coefficient for liquid water shows a very high THz absorption, 200 cm-1 at 1 THz. This paper describes a promising novel liquid double-modulated differential time-domain spectroscopy (Double-modulated DTDS) technique to extract the optical parameters with a dual-thickness measurement. The described technique improves on the previous work, by replacing the required sample dithering technique with a rotating spinning wheel resulting in an improved noise performance up to two orders of magnitude.
Description: © 2006 COPYRIGHT SPIE--The International Society for Optical Engineering
RMID: 0020062979
DOI: 10.1117/12.695722
Appears in Collections:Electrical and Electronic Engineering publications

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