Berlin 2008 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 24: Photonic crystals II

HL 24.7: Talk

Tuesday, February 26, 2008, 11:00–11:15, EW 202

Transmission Line Studies of Planar Optical Metamaterials — •Liwei Fu, Heinz Schweizer, Hongcang Guo, Na Liu, and Harald Giessen — 4. Physikalisches Institut, Universität Stuttgart, Germany

A number of recent studies have shown that optical metamaterials can be envisioned as nanocircuits in which local optical electric and magnetic fields are tailored and manipulated in the subwavelength domain [1, 2, 3, 4]. By properly arranging arrays of basic nano-scale circuit elements, stacked nano-transmission line metamaterials can be obtained to support forward or backward electromagnetic waves [2]. In this report we demonstrate transmission line circuit models for several planar optical metamaterials, which are synthesized based on retrieved nonlocal effective material parameters. Through these models, physical insight into the difference among several metamaterials can be obtained. We show further numerically that a negative index at optical frequencies with a high figure of merit (larger than 3.0 around 600 nm) can be obtained in an optimized meander structure. Most importantly, these circuit models provide the possible building blocks for 3D metamaterials.

[1] L. Fu, H. Schweizer, H. Guo, N. Liu, and H. Giessen, Appl. Phys. B 86, 425 (2007).

[2] N. Engheta, Science 317, 1698 (2007).

[3] H. Schweizer, L. Fu, H. Gräbeldinger, H. Guo, N. Liu, S. Kaiser, and H. Giessen, Phys. Stat. Sol. (b) 244, 1243 (2007).

[4] H. Schweizer, L. Fu, H. Gräbeldinger, H. Guo, N. Liu, S. Kaiser, and H. Giessen, Phys. Stat. Sol. (a) 204, 3886 (2007).