Limits on the amplification of evanescent waves of left-handed materials

Details Limits on the amplification of evanescent waves of left-handed materials Limits on the amplification of evanescent waves of left-handed materials

2005-04-14

arxiv.org/abs/cond-mat/0504349v1

Physics

Condensed Matter

Materials Science

4 pages, 3 figures

Scientific paper

10.1364/JOSAB.23.000485

We investigate the transfer function of the discretized perfect lens in finite-difference time-domain (FDTD) and transfer matrix (TMM) simulations; the latter allow to eliminate the problems associated with the explicit time dependence in FDTD simulations. We argue that the peak observed in the FDTD transfer function near the maximum parallel momentum $k_{\|,\mathrm{max}}$ is due to finite time artifacts. We also find the finite discretization mesh acts like imaginary deviations from $\mu=\epsilon=-1$ and leads to a cross-over in the transfer function from constance to exponential decay around $k_{\|,\mathrm{max}}$ limiting the attainable super-resolution. We propose a simple qualitative model to describe the impact of the discretization. $k_{\|,\mathrm{max}}$ is found to depend logarithmically on the mesh constant in qualitative agreement with the TMM simulations.

Affiliated with

Also associated with

No associations

Rating

Limits on the amplification of evanescent waves of left-handed materials does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Limits on the amplification of evanescent waves of left-handed materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Limits on the amplification of evanescent waves of left-handed materials will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-145430