Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Ara A. Asatryan"'
Autor:
Alexander Novikov, Ara A. Asatryan
Publikováno v:
Physical Review B. 98
© 2018 American Physical Society. Anderson localization of classical waves in weakly scattering one-dimensional Levy lattices is studied analytically and numerically. The disordered medium is composed of layers with alternating refractive indices an
Autor:
M. A. Byrne, Christopher G. Poulton, Ara A. Asatryan, Lindsay C. Botten, Pei-Yu Chen, Michael J. Steel, Alessandro Tuniz, Ross C. McPhedran, C.M. de Sterke, Kokou B. Dossou
Publikováno v:
Waves in Random and Complex Media. 22:531-570
The optical properties of photonic crystal slabs are often simulated with general three-dimensional methods such as finite-difference time-domain. Here we develop a multipole modal method, which is specialized to exploit two symmetries of the photoni
Autor:
Nicolae-Alexandru P. Nicorovici, Ross C. McPhedran, Lindsay C. Botten, Christopher G. Poulton, Ara A. Asatryan
Publikováno v:
Waves in Random and Complex Media. 20:656-677
The local density of states (LDOS) is a function of spatial position and frequency which governs the radiation properties of sources placed within structured optical systems. We show how the enhancement or suppression of the relative LDOS, comparing
Autor:
Ross C. McPhedran, Lindsay C. Botten, Ara A. Asatryan, Kokou B. Dossou, C.M. de Sterke, S. Wilcox, N. A. Nicorovici
Publikováno v:
Physica B: Condensed Matter. 394:330-334
An exact theory for modelling modes of generalised defects in 2D photonic crystals (PCs) with a genuinely infinite cladding is presented. The approach builds on our fictitious source superposition method for simple defects and permits an elegant exte
Autor:
Ross C. McPhedran, Ara A. Asatryan, Lindsay C. Botten, C. Martijn de Sterke, N. A. Nicorovici
Publikováno v:
Physica B: Condensed Matter. 394:320-324
The usual technique for calculating the mesoscopic conductance of materials is based on Pichard's transfer matrix method [J.L. Pichard, Thesis, University of Paris, Orsay, 1984]. The essential ideas of the theory of conductance for electronic systems
Publikováno v:
Physica B: Condensed Matter. 394:213-216
The frequency shift of sources embedded in a two-dimensional photonic cluster composed of circular cylinders is considered and the effects of cluster shape and orientation are investigated. It is found that by carefully tailoring the shape of the clu
Autor:
Lindsay C. Botten, Ara A. Asatryan, C.M. de Sterke, S Wilcox, Ross C. McPhedran, N. A. Nicorovici, Kokou B. Dossou
Publikováno v:
PIERS Online. 3:320-324
We present an exact theory for modelling modes of generalised defects in 2D photonic crystals with a truly inflnite cladding. We build on our flctitious source superposition method for simple defects and outline an elegant extension to model arbitrar
Publikováno v:
Waves in Random and Complex Media. 16:151-165
The frequency (Lamb) shift and local density of states (LDOS) in two-dimensional photonic crystals composed of a cluster of infinitely long circular cylinders is calculated classically using the radiation reaction mechanism. We investigate the freque
Autor:
Lindsay C. Botten, T. N. Langtry, Ross C. McPhedran, Grahame H.H. Smith, Kurt Busch, Ara A. Asatryan, N. A. Nicorovici, C.M. de Sterke, Peter A. Robinson
Publikováno v:
Progress In Electromagnetics Research. 41:21-60
—Multipolemethodshaveevolvedtobeanimportantclassof theoretical and computational techniques in the study of photoniccrystalsandrelatedproblems. Inthischapter,wepresentasystematicand unified development of the theory, and apply it to a range ofscat
Publikováno v:
Journal of the Optical Society of America. A, Optics, image science, and vision. 31(10)
The construction of Green's tensor for two-dimensional gyrotropic photonic clusters composed of cylinders with circular cross sections using the semi-analytic multipole method is presented. The high efficiency and accuracy of the method is demonstrat