
Proceedings Paper
Dielectric optical invisibility cloaksFormat | Member Price | Non-Member Price |
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Paper Abstract
Recently, metamaterial cloaks for the microwave frequency range have been designed
using transformative optics design techniques and experimentally demonstrated. The design of
these structures requires extreme values of permittivity and permeability within the device, which
has been accomplished by the use of resonating metal elements. However, these elements
severely limit the operating frequency range of the cloak due to their non-ideal dispersion
properties at optical frequencies.
In this paper we present designs to implement a simpler demonstration of cloaking, the
carpet cloak, in which a curved reflective surface is compressed into a flat reflective surface,
effectively shielding objects behind the curve from view with respect to the incoming radiation
source. This approach eliminates the need for metallic resonant elements. These structures can
now be fabricated using only high index dielectric materials by the use of electron beam
lithography and standard cleanroom technologies. The design method, simulation analysis, device
fabrication, and near field optical microscopy (NSOM) characterization results are presented for
devices designed to operate in the 1400-1600nm wavelength range. Improvements to device
performance by the deposition/infiltration of linear, and potentially non-linear optical materials,
were investigated.
Paper Details
Date Published: 10 September 2010
PDF: 10 pages
Proc. SPIE 7756, Active Photonic Materials III, 775608 (10 September 2010); doi: 10.1117/12.861629
Published in SPIE Proceedings Vol. 7756:
Active Photonic Materials III
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)
PDF: 10 pages
Proc. SPIE 7756, Active Photonic Materials III, 775608 (10 September 2010); doi: 10.1117/12.861629
Show Author Affiliations
J. Blair, Georgia Institute of Technology (United States)
V. A. Tamma, Univ. of Colorado at Boulder (United States)
V. A. Tamma, Univ. of Colorado at Boulder (United States)
W. Park, Univ. of Colorado at Boulder (United States)
C. J. Summers, Georgia Institute of Technology (United States)
C. J. Summers, Georgia Institute of Technology (United States)
Published in SPIE Proceedings Vol. 7756:
Active Photonic Materials III
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)
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