Fourier optics and near-field superlens

Yunlong Sheng; Guillaume Tremblay; Yann Gravel

doi:10.1117/12.897188

20 September 2011 Fourier optics and near-field superlens

Yunlong Sheng, Guillaume Tremblay, Yann Gravel

Proceedings Volume 8122, Tribute to Joseph W. Goodman; 81220K (2011) https://doi.org/10.1117/12.897188
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

Fundamental Fourier optics is applied to metallic near-field superlens, whose transfer function is computed with the transfer matrix, the Surface Plasmon Polariton (SPP) resonance and the SPP waveguide theory. However, when the object nano-structure consists of feature nano-slits and nano-holes etc, which are as the basic object elements to scatter the light, especially when the objects are metal, the electrical dipoles are induced at the nano-slits and nano-holes by the illuminating light, the space invariance condition can be not respected within the dimension of the nano-meter scale objects, so that the point spread function becomes approximate and the superlens is usually characterized by the image of a two nano-slit pattern. The superlens is designed and optimized based on the transfer function. Improvement in the transfer function can improve significantly the image quality. The real image of the near-field superlens can be computed with numerical simulation using the FDTD method.

Citation Download Citation

Yunlong Sheng, Guillaume Tremblay, and Yann Gravel "Fourier optics and near-field superlens", Proc. SPIE 8122, Tribute to Joseph W. Goodman, 81220K (20 September 2011); https://doi.org/10.1117/12.897188

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