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Appl. Phys. Lett. 94, 041115 (2009); http://dx.doi.org/10.1063/1.3072594 (3 pages)

An algorithm to sculpt photon dispersion in a subwavelength nanostructure

Feng Zhang, Kito S. Holliday, Paul E. Lammert, and Vincent H. Crespi

Department of Physics and Department of Materials Science and Engineering, Pennsylvania State University, 104 Davey Lab, University Park, Pennsylvania 16802-6300, USA

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(Received 1 October 2008; accepted 25 December 2008; published online 28 January 2009)

We introduce a method of gradient-based optimization that continuously deforms a periodic dielectric distribution to generate photonic structures that possess any desired figure of merit expressible in terms of the electromagnetic eigenmodes. As an example, we generate forbidden regions between specified bands at extremely low dielectric contrast.

© 2009 American Institute of Physics

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0003-6951 (print)  
1077-3118 (online)

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