Bertling, K, Han, S, Wu, T et al. (10 more authors) (2018) Determining Ethanol Content of Liquid Solutions Using Laser Feedback Interferometry with a Terahertz Quantum Cascade Laser. IEEE Sensors Letters, 2 (3). 3501604. ISSN 2475-1472
Abstract
Over the last decade, terahertz (THz) time-domain spectroscopy has been investigated as a technique for assaying the ethanol content of liquid solutions-indeed, operating at THz frequencies addresses some of the challenges that traditional optical refraction measurements face, such as delineation between sugar-ethanol content, florescence, and problems arising from carbonation or other dissolved gasses. In this article, we propose an alternative system and method for assaying ethanol content of liquid solutions at THz frequencies, which employs a laser feedback interferometer built around a 2.6-THz quantum cascade laser. The system is tested against a series of controlled water-ethanol solutions, as well as a series of commercially available beverages. The accuracy of the estimated ethanol content compares favorably to THz time-domain spectroscopy techniques.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/ |
Keywords: | Electromagnetic wave sensors , laser feedback interferometry , terahertz (THz) sensing |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Funding Information: | Funder Grant number EU - European Union CGA-BM1205-1 EU - European Union 633054 |
Depositing User: | Symplectic Publications |
Date Deposited: | 14 Jan 2019 10:49 |
Last Modified: | 14 Jan 2019 10:49 |
Status: | Published |
Publisher: | IEEE |
Identification Number: | 10.1109/LSENS.2018.2858927 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:140973 |