TY - JOUR
T1 - On the refractive index for a nonmagnetic two-component medium
T2 - Resolution of a controversy
AU - Geddes, Joseph B.
AU - Mackay, Tom G.
AU - Lakhtakia, Akhlesh
N1 - Funding Information:
We thank S.A. Ramakrishna for helpful discussions. J.B.G. is supported by a Beckman Postdoctoral Fellowship . T.G.M. is supported by a Royal Society of Edinburgh/Scottish Executive Support Research Fellowship .
PY - 2007/12/1
Y1 - 2007/12/1
N2 - The refractive index of a dielectric medium comprising both passive and inverted components in its permittivity was determined using two methods: (i) in the time-domain, a finite-difference algorithm to compute the frequency-domain reflectance from reflection data for a pulsed plane wave that is normally incident on a dielectric half-space and (ii) in the frequency-domain, the deflection of an obliquely incident Gaussian beam on transmission through a dielectric slab. The dielectric medium was found to be an active medium with a negative real part for its refractive index. Thereby, a recent controversy in the scientific literature was resolved.
AB - The refractive index of a dielectric medium comprising both passive and inverted components in its permittivity was determined using two methods: (i) in the time-domain, a finite-difference algorithm to compute the frequency-domain reflectance from reflection data for a pulsed plane wave that is normally incident on a dielectric half-space and (ii) in the frequency-domain, the deflection of an obliquely incident Gaussian beam on transmission through a dielectric slab. The dielectric medium was found to be an active medium with a negative real part for its refractive index. Thereby, a recent controversy in the scientific literature was resolved.
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U2 - 10.1016/j.optcom.2007.08.025
DO - 10.1016/j.optcom.2007.08.025
M3 - Article
AN - SCOPUS:35148831271
VL - 280
SP - 120
EP - 125
JO - Optics Communications
JF - Optics Communications
SN - 0030-4018
IS - 1
ER -