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Tunable negative refractions in two-dimensional photonic crystals with superconductor constituents

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7 Author(s)
Feng, Liang ; National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, People’s Republic of China ; Liu, Xiao-Ping ; Ren, Jie ; Tang, Yue-Feng
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In this paper, a two-dimensional square photonic crystal (PC) with superconductor cylinders is proposed to realize tunable negative refraction. Based on the dependence of the superconductors’ permittivity on temperatures, photonic band structures thus negative refraction could be tuned by temperatures, whereby the refractive angle could be scanned from positive to negative. The feasibility of the PC operating in infrared and visible regions was discussed. The tunability resulted from the lattice, superconductors, operating frequency, and incident angle may lead the PC to great promise in photoelectronics and superconductor electronic applications.

Published in:

Journal of Applied Physics  (Volume:97 ,  Issue: 7 )

Date of Publication:

Apr 2005

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