Elliptic cylindrical pseudo-optical black hole for omnidirectional light absorber

Y. Y. Lee; E. S. Kang; K. H. Jung; J. W. Lee; D. Ahn

doi:10.1364/JOSAB.31.001948

Elliptic cylindrical pseudo-optical black hole for omnidirectional light absorber

Y. Y. Lee, E. S. Kang, K. H. Jung, J. W. Lee, D. Ahn

School of Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

An elliptic cylindrical omnidirectional light absorber forming a pseudo-optical black hole is studied both analytically and numerically. The conditions for permittivity tensors to trap optical rays are obtained from semiclassical analysis of the ray optic Hamiltonian. The dispersive finite-difference time-domain method is used to study the performance of these light-absorbing structures numerically. It is found that the permittivity of the structure in the form (1/sinh^u u) ≥ (a/r)ⁿ traps the light ray efficiently into the elliptic absorber for n ¡Ý 2, where u is the radial elliptic coordinate and a is the focal distance.

Original language	English
Pages (from-to)	1948-1953
Number of pages	6
Journal	Journal of the Optical Society of America B: Optical Physics
Volume	31
Issue number	8
DOIs	https://doi.org/10.1364/JOSAB.31.001948
State	Published - 1 Aug 2014

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abstract = "An elliptic cylindrical omnidirectional light absorber forming a pseudo-optical black hole is studied both analytically and numerically. The conditions for permittivity tensors to trap optical rays are obtained from semiclassical analysis of the ray optic Hamiltonian. The dispersive finite-difference time-domain method is used to study the performance of these light-absorbing structures numerically. It is found that the permittivity of the structure in the form (1/sinhu u) ≥ (a/r)n traps the light ray efficiently into the elliptic absorber for n ¡{\'Y} 2, where u is the radial elliptic coordinate and a is the focal distance.",

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AU - Lee, Y. Y.

AU - Kang, E. S.

AU - Jung, K. H.

AU - Lee, J. W.

AU - Ahn, D.

PY - 2014/8/1

Y1 - 2014/8/1

N2 - An elliptic cylindrical omnidirectional light absorber forming a pseudo-optical black hole is studied both analytically and numerically. The conditions for permittivity tensors to trap optical rays are obtained from semiclassical analysis of the ray optic Hamiltonian. The dispersive finite-difference time-domain method is used to study the performance of these light-absorbing structures numerically. It is found that the permittivity of the structure in the form (1/sinhu u) ≥ (a/r)n traps the light ray efficiently into the elliptic absorber for n ¡Ý 2, where u is the radial elliptic coordinate and a is the focal distance.

AB - An elliptic cylindrical omnidirectional light absorber forming a pseudo-optical black hole is studied both analytically and numerically. The conditions for permittivity tensors to trap optical rays are obtained from semiclassical analysis of the ray optic Hamiltonian. The dispersive finite-difference time-domain method is used to study the performance of these light-absorbing structures numerically. It is found that the permittivity of the structure in the form (1/sinhu u) ≥ (a/r)n traps the light ray efficiently into the elliptic absorber for n ¡Ý 2, where u is the radial elliptic coordinate and a is the focal distance.

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JO - Journal of the Optical Society of America B: Optical Physics

JF - Journal of the Optical Society of America B: Optical Physics

IS - 8

ER -

Elliptic cylindrical pseudo-optical black hole for omnidirectional light absorber

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