Diluted Chemical Identification by Total Internal Reflection Photonic Sensing - Biomedical Optics

Eduardo Valero, Sergio L. Carrasco-Ortiz, Maria Morant, Roberto Llorente

Abstract

A novel optical sensor architecture for the rapid identification of liquid samples is proposed and evaluated experimentally. The proposed architecture is based on total internal reflection transmission of a laser beam. A CMOS sensor is used to acquire the reflection produced by a narrow laser beam when interacting with the liquid sample on the surface of an equilateral prism. Using digital image processing techniques, the critical angle of the transmission is calculated and the identification of the refractive index of the liquid sample is obtained. In the present work, distinct liquid substances were evaluated experimentally using a red He-Ne laser at 632.8 nm wavelength obtaining the refractive index with a deviation of less than 0.0014 from the value. Sensing by refractive index changes are of great importance in biomedical (e.g. optical diagnosis and laser treatments) and chemical applications.

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Paper Citation


in Harvard Style

Valero E., Carrasco-Ortiz S., Morant M. and Llorente R. (2018). Diluted Chemical Identification by Total Internal Reflection Photonic Sensing - Biomedical Optics.In Proceedings of the 6th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS, ISBN 978-989-758-286-8, pages 197-204. DOI: 10.5220/0006616501970204


in Bibtex Style

@conference{photoptics18,
author={Eduardo Valero and Sergio L. Carrasco-Ortiz and Maria Morant and Roberto Llorente},
title={Diluted Chemical Identification by Total Internal Reflection Photonic Sensing - Biomedical Optics},
booktitle={Proceedings of the 6th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,},
year={2018},
pages={197-204},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006616501970204},
isbn={978-989-758-286-8},
}


in EndNote Style

TY - CONF

JO - Proceedings of the 6th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,
TI - Diluted Chemical Identification by Total Internal Reflection Photonic Sensing - Biomedical Optics
SN - 978-989-758-286-8
AU - Valero E.
AU - Carrasco-Ortiz S.
AU - Morant M.
AU - Llorente R.
PY - 2018
SP - 197
EP - 204
DO - 10.5220/0006616501970204