Optofluidic prism refractometer

Sergio Calixto; Areli Montes-Perez; Guillermo Garnica

doi:10.1117/12.2036788

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6 March 2014 Optofluidic prism refractometer

Sergio Calixto, Areli Montes-Perez, Guillermo Garnica

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Proceedings Volume 8976, Microfluidics, BioMEMS, and Medical Microsystems XII; 89761D (2014) https://doi.org/10.1117/12.2036788
Event: SPIE MOEMS-MEMS, 2014, San Francisco, California, United States

Abstract

This paper describes a simple method of measuring refractive indices of liquids with a small hollow prism. When a He-Ne laser beam is sent to the liquid filled prism it is angularly deviated or deflected. If different liquids are injected in the prism, one at a time, the angular position of the emerging beam changes. These angular positions are detected by an optical fiber that samples a small area of the Gaussian beam cross section. A calibration curve relating intensity as a function of the liquid refractive index is obtained.

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Sergio Calixto, Areli Montes-Perez, and Guillermo Garnica "Optofluidic prism refractometer", Proc. SPIE 8976, Microfluidics, BioMEMS, and Medical Microsystems XII, 89761D (6 March 2014); https://doi.org/10.1117/12.2036788

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