Negative dispersion: a backward wave or fast light? Nanoplasmonic examples
نویسندگان
چکیده
منابع مشابه
Dispersion Evaluation In Optical Wave Guides
One of the factors which limits the transmission capacity of the fiber optics communication channel is the material dispersion. Exact analytical study of the material dispersion is often complex and involves calculating the derivatives of the refractive index of the core. These calculations are too cumbersome to do, especially for high-order derivatives. So material dispersion has only been stu...
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Thomas P. White1,2,* and Andrey A. Sukhorukov1 1Nonlinear Physics Centre and Centre for Ultrahigh-Bandwidth Devices for Optical Systems (CUDOS), Research School of Physics and Engineering, Australian National University, Canberra, Australian Capital Territory 0200, Australia 2Laser Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, Australian C...
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We demonstrate superluminal light propagation using two frequency multiplexed pump beams to produce a gain doublet in a photorefractive crystal of Ce:BaTiO(3). The two gain lines are obtained by two-wave mixing between a probe field and two individual pump fields. The angular frequencies of the pumps are symmetrically tuned from the frequency of the probe. The frequency difference between the p...
متن کاملDispersion Evaluation In Optical Wave Guides
One of the factors which limits the transmission capacity of the fiber optics communication channel is the material dispersion. Exact analytical study of the material dispersion is often complex and involves calculating the derivatives of the refractive index of the core. These calculations are too cumbersome to do, especially for high-order derivatives. So material dispersion has only been stu...
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NASA Lewis Research Center is engaged in a program to develop a series of backward wave osci l la tors (BWO's) for the frequency range 500 to 2000 GHz. Generically BWO's are electron beam travel ing wave tubes operating in a dispersive regime in which the group velocity and the phase veloci ty of the induced electromagnetic wave are in opposite direct ions. The osc i l la t ion frequency of a B...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2009
ISSN: 1094-4087
DOI: 10.1364/oe.17.018934