Systematic study of the focal shift effect in planar plasmonic slit lenses

• Main Authors: Hu, Bin, Wang, Qi Jie, Zhang, Ying
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2013
• Online Access: https://hdl.handle.net/10356/97601; http://hdl.handle.net/10220/10666
• Institution: Nanyang Technological University

In this paper, we systematically studied the focal shift effect in planar plasmonic slit lenses. Through theoretical derivations and numerical simulations, we found that there is a focal length shift between the traditional design model and the finite-difference time-domain simulations. The shift is...