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9 February 2009Ray-tracing technique and imaging properties by a PC slab with neff=-1
In recent years, negative refractive media as the representation of new electromagnetic medium has become the front and
the very popular researching field, and the production of the flat lens is one of its major applications. In our study, the
imaging behaviors by two-dimensional photonic crystal slabs have been investigated systematically. We suggest a
ray-tracing technique to discuss the action of photonic crystal slab with negative refraction. The propagation of
electromagnetic waves in two-dimensional hexagonal lattice photonic crystal slab is investigated through dispersion
characteristics analysis and numerical simulation of field patterns. Imaging and focusing with effective negative
refractive index of -1 have been observed in these systems for both polarized waves, that is TE- and TM-polarized point
source be considered simultaneously. Based on the exact finite-difference time-domain method to perform numerical
simulation and physical analysis, we have demonstrated that the two-dimensional photonic crystal we designed can
realize nearly perfect imaging with TM-polarized point source in the near field and far field, and the results are
consistent with the ray-tracing technique quite well, while to TE-polarized point source the imaging is not perfect
although it have neff=-1 in the same direction.
Y. Wang,Jiabi Chen, andW. Qian
"Ray-tracing technique and imaging properties by a PC slab with neff=-1", Proc. SPIE 7158, 2008 International Conference on Optical Instruments and Technology: Microelectronic and Optoelectronic Devices and Integration, 715813 (9 February 2009); https://doi.org/10.1117/12.805671
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Y. Wang, Jiabi Chen, W. Qian, "Ray-tracing technique and imaging properties by a PC slab with neff=-1," Proc. SPIE 7158, 2008 International Conference on Optical Instruments and Technology: Microelectronic and Optoelectronic Devices and Integration, 715813 (9 February 2009); https://doi.org/10.1117/12.805671