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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 12 — Jun. 15, 2009
  • pp: 1912–1914

Optical characterization of alcohol-infiltrated one-dimensional silicon photonic crystals

Giuseppe Barillaro, Sabina Merlo, and Lucanos M. Strambini  »View Author Affiliations

Optics Letters, Vol. 34, Issue 12, pp. 1912-1914 (2009)

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In this work, experimental results on the optical characterization of alcohol-infiltrated silicon/air one-dimensional photonic crystals (1D-PhCs), fabricated by electrochemical micromachining of silicon, are presented. The spectral reflectivity of high-order hybrid 1D-PhCs with a spatial period of 8 μ m was measured, in the wavelength range 1.0 1.7 μ m , when alcohols (ethanol and isopropanol) substitute air inside the trenches. A reliable redshift is observed in the presence of alcohols, with respect to air, which allows one to discriminate the refractive index difference between the alcohols. Experimental data are in good agreement with numerical results calculated by using the characteristic matrix method, modified to take into account surface roughness of silicon walls.

© 2009 Optical Society of America

OCIS Codes
(220.0220) Optical design and fabrication : Optical design and fabrication
(230.0230) Optical devices : Optical devices
(230.4000) Optical devices : Microstructure fabrication
(230.4040) Optical devices : Mirrors
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(230.5298) Optical devices : Photonic crystals

ToC Category:
Optical Devices

Original Manuscript: April 14, 2009
Manuscript Accepted: May 3, 2009
Published: June 12, 2009

Giuseppe Barillaro, Sabina Merlo, and Lucanos M. Strambini, "Optical characterization of alcohol-infiltrated one-dimensional silicon photonic crystals," Opt. Lett. 34, 1912-1914 (2009)

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