Photonic band gap properties of GaP opals with a new topology |
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Authors: | E. Palacios-Lidón H. M. Yates M. E. Pemble C. López |
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Affiliation: | (1) Instituto de Ciencia de Materiales de Madrid (CSIC), C/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain;(2) Institute of Materials, Cockcroft Building, University of Salford, Salford, M5 4WT, UK;(3) Present address: NMRC, Lee Maltings, Prospect Row, Cork, Ireland |
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Abstract: | In this paper, we propose that the “anomalous” optical response exhibited by GaP and InP infiltrated opals is due to the peculiar morphology shown by these materials when grown within the pores. In order to account for their optical response, we propose a new structural model consisting of a network of high dielectric spheres located in the pores of the bare opal, interconnected by cylinders of the same material. A fair agreement between the theoretical predictions using this model and the experimental measurements has been found. We also show that the inverse structure presents very interesting optical properties. |
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Keywords: | 42.70.Qs 42.25.Fx 42.25.Gy |
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