Delay times in a terahertz chiral metamaterial slab
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We investigate the propagation of circularly polarized electromagnetic waves through a free-standing Omega particle chiral metamaterial slab and study the associated delay times: dwell time and group delay. Through this analysis, we observe different interactions of right- and left-circularly polarized waves in the terahertz frequency range (1-2.5 THz) with the resonant elements. As a consequence, the resonant-frequency group delay and dwell time of the right-circularly polarized wave are one or more orders of magnitude longer than those of the left. In addition, we compare the delay times obtained from rigorous numerical simulations with those calculated using the retrieved effective parameters. We find that the dwell time cannot be evaluated correctly from the effective medium approximation, while no such problems exist in the case of group delay.
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Physical Review A, 2016, 94, 2Funding / projects:
- Functional, Functionalized and Advanced Nanomaterials (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45005)
- Photonics of micro and nano structured materials (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45010)
DOI: 10.1103/PhysRevA.94.023848
ISSN: 2469-9926; 2469-9934
WoS: 000382016400013
Scopus: 2-s2.0-84988697930
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VinčaTY - JOUR AU - Stojanović, Danka AU - Radovanović, Jelena V. AU - Milanović, Vitomir B. PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1215 AB - We investigate the propagation of circularly polarized electromagnetic waves through a free-standing Omega particle chiral metamaterial slab and study the associated delay times: dwell time and group delay. Through this analysis, we observe different interactions of right- and left-circularly polarized waves in the terahertz frequency range (1-2.5 THz) with the resonant elements. As a consequence, the resonant-frequency group delay and dwell time of the right-circularly polarized wave are one or more orders of magnitude longer than those of the left. In addition, we compare the delay times obtained from rigorous numerical simulations with those calculated using the retrieved effective parameters. We find that the dwell time cannot be evaluated correctly from the effective medium approximation, while no such problems exist in the case of group delay. T2 - Physical Review A T1 - Delay times in a terahertz chiral metamaterial slab VL - 94 IS - 2 DO - 10.1103/PhysRevA.94.023848 ER -
@article{ author = "Stojanović, Danka and Radovanović, Jelena V. and Milanović, Vitomir B.", year = "2016", abstract = "We investigate the propagation of circularly polarized electromagnetic waves through a free-standing Omega particle chiral metamaterial slab and study the associated delay times: dwell time and group delay. Through this analysis, we observe different interactions of right- and left-circularly polarized waves in the terahertz frequency range (1-2.5 THz) with the resonant elements. As a consequence, the resonant-frequency group delay and dwell time of the right-circularly polarized wave are one or more orders of magnitude longer than those of the left. In addition, we compare the delay times obtained from rigorous numerical simulations with those calculated using the retrieved effective parameters. We find that the dwell time cannot be evaluated correctly from the effective medium approximation, while no such problems exist in the case of group delay.", journal = "Physical Review A", title = "Delay times in a terahertz chiral metamaterial slab", volume = "94", number = "2", doi = "10.1103/PhysRevA.94.023848" }
Stojanović, D., Radovanović, J. V.,& Milanović, V. B.. (2016). Delay times in a terahertz chiral metamaterial slab. in Physical Review A, 94(2). https://doi.org/10.1103/PhysRevA.94.023848
Stojanović D, Radovanović JV, Milanović VB. Delay times in a terahertz chiral metamaterial slab. in Physical Review A. 2016;94(2). doi:10.1103/PhysRevA.94.023848 .
Stojanović, Danka, Radovanović, Jelena V., Milanović, Vitomir B., "Delay times in a terahertz chiral metamaterial slab" in Physical Review A, 94, no. 2 (2016), https://doi.org/10.1103/PhysRevA.94.023848 . .