2015 BFY II Abstract Detail Page

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Abstract Title: Investigation of the Bragg-Snell Law in Photonic Crystals
Abstract: We present an optical experiment on photonic crystals suitable for an advanced physics laboratory course or a senior capstone project. Photonic crystals are periodically ordered composite systems made of materials that have different dielectric constants, and can be arranged in one, two, or three dimensions. They are characterized by a bandgap that depends on the size and dielectric constant of the microstructures making up the crystal. In addition, the bandgap spectrally shifts with the angle of the incident light. These observations are captured by the Bragg-Snell law. We describe a vertical deposition method for growing photonic crystals from a water suspension of polystyrene microspheres as well as a simple optical experiment students can perform using a USB-spectrometer to study the Bragg-Snell law.
Abstract Type: Poster

Author/Organizer Information

Primary Contact: Shabbir M Mian
McDaniel College
2 College Hill
Department of Physics
Westminster, MD 21157
Phone: 4108562483
Fax: 4103864624
and Co-Presenter(s)
Gina Mayonado
Department of Physics, McDaniel College, 2 College Hill, Westminster, MD 21157

Valentina Robbiano and Franco Cacialli
Department of Physics and Astronomy, and London Centre for Nanotechnology
University College London, Gower Street, London, WC1E 6BT, United Kingdom

Presentation Documents

Contributed Poster: Download the Contributed Poster