| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 7, 2012
|
|
|---|---|---|
| Article Number | 12053 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.2971/jeos.2012.12053 | |
| Published online | 22 December 2012 | |
Regular papers
Tuning the focal point of a plasmonic lens by nematic liquid crystal
Department of Electrical and Computer Engineering, K. N. Toosi University of Technology, Shariati Street, Tehran, Iran
* mohsen_bahrami@ee.kntu.ac.ir
Received:
14
June
2012
Revised:
15
September
2012
A theoretical and numerical investigation of tunable plasmonic nano-optic lens on the basis of liquid crystal are proposed as a new method of active modulating the output beam. The focal length can be controlled easily by exposing plasmonic nano-optic lens to constant external electric field. The physical principle of this phenomenon is evaluated from the phase of Fabry-Perot (F-P) resonance in slits and electro-optical effect of liquid crystal. Our numerical simulations reveal that large tuning range of the focal length up to 725 nm can be achieved. The results in this article provide a potential way to realize tunable plasmonic lens, which can be applied as an efficient element in ultrahigh nano-scale integrated photonic circuits for miniaturization and tuning purposes.
Key words: Surface plasmons / anisotropic media / tunable nano-optic lens
© The Author(s) 2012. All rights reserved.
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