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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 11 — Aug. 25, 2010

Holographic grating based high sensitivity device for refractive index measurements

Domenico Donisi, Roberto Caputo, and Giovanni Cennini  »View Author Affiliations

Optics Express, Vol. 18, Issue 14, pp. 15236-15241 (2010)

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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.

© 2010 OSA

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.5710) Instrumentation, measurement, and metrology : Refraction

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: June 9, 2010
Revised Manuscript: June 21, 2010
Manuscript Accepted: June 21, 2010
Published: July 1, 2010

Virtual Issues
Vol. 5, Iss. 11 Virtual Journal for Biomedical Optics

Domenico Donisi, Roberto Caputo, and Giovanni Cennini, "Holographic grating based high sensitivity device for refractive index measurements," Opt. Express 18, 15236-15241 (2010)

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