科研之友
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摘要
A simple superlens formed by a one-dimensional dielectric photonic crystal is introduced. Off-axis subwave-length focusing is achieved and studied with the equifrequency contour analysis and finite-difference time-domain simulation. Besides its advantage of simplicity, the present superlens can give a spot size much smaller than that achieved by a slab of some high-dimensional photonic crystal of negative refraction. The properties of an on-axis image achieved by the combination of two slabs of the one-dimensional photonic crystal are also studied.
- 出版日期2008-3
- 单位浙江大学
