MS Physics Thesis Defense: “Analysis of the Reflectance Function for the Investigation of Biological Optical Filters” by Erika Aranas

The Department of Physics cordially invites you to the Thesis Defense of Ms. Erika Aranas on Monday, 11 February 2013, 3:00-5:00 pm, at Faura 318. Erika’s thesis adviser is Dr. Raphael Guerrero, coordinator of the Photonics Laboratory.

Title: Analysis of the Reflectance Function for the Investigation of Biological Optical Filters

Abstract:

Electromagnetic wave propagation in one-dimensional periodic media may be described using classical interference theory and modern photonic crystal theory. Both approaches may be employed in the investigation of laminated optical structures responsible for iridescence in beetles. Convergence of the two frameworks in the limit as the number of layers approach infinity is shown. Without relying on cumbersome absolute reflectance measurements and low-resolution micrographs, design parameter extraction was conducted based on angle-dependent peak wavelengths derived from relative reflectance experiments and other known parameters. In particular, the new band gap condition, formulated using the classical model, and the infinite layer approximation, facilitated the retrieval calculations.

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