GAUSSIAN PROBE BEAM WITH HIGH SPHERICAL ABERRATION FOR REFRACTIVE INDEX MEASUREMENTS IN LIQUID SAMPLES. AN APPLICATION TO GLUCOSE CONCENTRATION
"This thesis introduce a highly sensitive optical technique to measure refractive indexes of liquid transparent or turbid samples, based on measuring the heights of the primary side-lobes of the normalized intensity profiles of a focused Gaussian beam with high spherical aberration, measuring t...
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| Format: | doctoral thesis |
| Status: | Published version |
| Publication Date: | 2020 |
| Country: | México |
| Institution: | Centro de Investigaciones en Óptica |
| Repository: | Repositorio Institucional CIO |
| Language: | English |
| OAI Identifier: | oai:cio.repositorioinstitucional.mx:1002/1191 |
| Online Access: | http://cio.repositorioinstitucional.mx/jspui/handle/1002/1191 |
| Access Level: | Open access |
| Keyword: | info:eu-repo/classification/Autor/Refractive index info:eu-repo/classification/Autor/Glucose measurements info:eu-repo/classification/Autor/Gaussian beam info:eu-repo/classification/Autor/Aberration info:eu-repo/classification/Autor/Liquid samples info:eu-repo/classification/Autor/Concentrations info:eu-repo/classification/cti/7 info:eu-repo/classification/cti/33 info:eu-repo/classification/cti/3311 info:eu-repo/classification/cti/331111 |
| Summary: | "This thesis introduce a highly sensitive optical technique to measure refractive indexes of liquid transparent or turbid samples, based on measuring the heights of the primary side-lobes of the normalized intensity profiles of a focused Gaussian beam with high spherical aberration, measuring the refractive index of the samples with high accuracy and repeatability. The sensitivity can be easily modified. We demonstrate analytically and experimentally that, since the technique relies on the diffracted properties of the Gaussian beam, the measurements are immune to noise. We exemplify the use of the technique by measuring glucose concentrations." |
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