Abstract
The characteristics of optical-wave target detection and imaging from a negative-refraction photonic crystal (NR-PC) flat lens are studied with a two-dimensional (2D) finite-difference time-domain (FDTD) method in the paper. The results show that there exists a transmission peak, with a value far greater than unit, resulting from the influence of the mini-forbidden bands and resonance excitation effect at resonance frequency. Also, the refocusing of backscattered optical wave from the target leads to its image with a sub-wavelength lateral resolution and great amplitude as long as the target is placed at the focus of the NR-PC flat lens. Therefore, the NR-PC flat lens will find many implications in optical area, especially in the detection and imaging of small targets.
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Shen, T.G., Meng, W.J., Sun, J. et al. Numerical research on properties of optical-wave target detection and imaging from NR-PC flat lens. Appl. Phys. B 100, 841–846 (2010). https://doi.org/10.1007/s00340-010-4176-6
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DOI: https://doi.org/10.1007/s00340-010-4176-6