Holographic grating based high sensitivity device for refractive index measurements

Optics Express
Domenico DonisiGiovanni Cennini

Abstract

In this communication, we show how a short-pitch diffractive structure can be used as a low-cost high sensitivity device for refractive index measurements with sensitivity of 10(-2). The device consists of a photo-resist diffraction grating put in optical contact with a hollow prism used as a container for a test material. Its main advantage is the possibility to monitor the composition of solids, fluids and gases in real time. Knowledge of optical parameters of a system with high accuracy can be vital when working in the biological/medical field.

References

Mar 24, 2005·Physical Review Letters·Giuseppe StrangiGabriel Noam Price
Nov 21, 2007·Nature Materials·Scott J WoltmanGregory P Crawford
Aug 20, 2007·Optics Express·Roberto CaputoHugo J Cornelissen
Feb 23, 2010·Optics Express·Timothy J WhiteTimothy J Bunning

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Citations

Dec 28, 2019·Optics Express·Sergio CalixtoGuillermo Garnica

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