Special Section: Selected Papers from the 3rd Mediterranean Conference on Nanophotonics

Tunneling times in dispersive and third-order nonlinear optical metamaterials

[+] Author Affiliations
Jelena V. Radovanović

University of Belgrade, School of Electrical Engineering, Bulevar kralja Aleksandra 73, 11120 Belgrade, Serbia

Igor Ilić

University of Belgrade, Vinca Institute of Nuclear Sciences, Mike Petrovica Alasa 12-14, P.O. Box 522, 11001 Belgrade, Serbia

Petra P. Beličev

University of Belgrade, Vinca Institute of Nuclear Sciences, Mike Petrovica Alasa 12-14, P.O. Box 522, 11001 Belgrade, Serbia

Ljupčo Hadžievski

University of Belgrade, Vinca Institute of Nuclear Sciences, Mike Petrovica Alasa 12-14, P.O. Box 522, 11001 Belgrade, Serbia

Vitomir B. Milanović

University of Belgrade, School of Electrical Engineering, Bulevar kralja Aleksandra 73, 11120 Belgrade, Serbia

J. Nanophoton. 5(1), 051802 (May 12, 2011). doi:10.1117/1.3586782
History: Received January 31, 2011; Revised March 16, 2011; Accepted April 11, 2011; Published May 12, 2011; Online May 12, 2011
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Investigating the propagation of electromagnetic radiation in linear and nonlinear materials (with third-order nonlinearity), we derived a general expression for the dwell time valid for all linear media, as well as its relation with the group delay. The obtained results indicate that, for a nonmagnetic lossless material, the group delay reduces to the sum of the dwell time and the self-interference time. Calculations confirmed the occurrence of the Hartman effect in negative-refractive-index metamaterials (the dwell time saturates with increasing obstacle length), as well as the negative group delay in a certain spectral regime. Analysis of the Goos–Hänchen shift, in case of an obstacle made of negative-refractive-index metamaterial embedded in a dielectric with saturable nonlinearity, showed that there is no impact on the dwell time, while various effects on the group delay may be achieved, including its reduction or even preservation for nonzero incident angles.

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© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Jelena V. Radovanović ; Igor Ilić ; Petra P. Beličev ; Ljupčo Hadžievski and Vitomir B. Milanović
"Tunneling times in dispersive and third-order nonlinear optical metamaterials", J. Nanophoton. 5(1), 051802 (May 12, 2011). ; http://dx.doi.org/10.1117/1.3586782


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