Opal-based composites as photonic crystals

S. G. Romanov; A. V. Fokin; H. M. Yates; M. E. Pemble; N. P. Johnson; R. M. De La Rue

doi:10.1049/ip-opt:20000346

Opal-based composites as photonic crystals

S. G. Romanov
, A. V. Fokin
, H. M. Yates
, M. E. Pemble
, N. P. Johnson
, R. M. De La Rue

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

Abstract

The photonic energy band structure of a 3D, face-centred cubic package of silica balls (synthetic opal) was studied for both the positive refractive index (RI) contrast (RI_ball>RI_void) and inverted contrast (RI_ball<RI_void) situations. The inverted situation was obtained by impregnation of interstitial voids with a high-RI semiconductor. Following the inversion of the scattering ensemble, a dramatic change in the stop-bandwidth and angular dispersion of the stop-band were observed. The spontaneous emission from an incomplete photonic crystal is anisotropic to an extent which depends on the angular dispersion of the stop-band: it is suppressed in the middle of the stop-band and amplified at the stop-band edges. The amplified spontaneous emission (ASE) regime is the result of interplay between the photonic and electronic energy bandstructures of the photonic crystal. This effect is considered to be a precursor for stimulated emission.

Original language	English
Pages (from-to)	138-144
Number of pages	7
Journal	IEE Proceedings: Optoelectronics
Volume	147
Issue number	2
DOIs	https://doi.org/10.1049/ip-opt:20000346
Publication status	Published - 2000
Externally published	Yes

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title = "Opal-based composites as photonic crystals",

abstract = "The photonic energy band structure of a 3D, face-centred cubic package of silica balls (synthetic opal) was studied for both the positive refractive index (RI) contrast (RIball>RIvoid) and inverted contrast (RIballvoid) situations. The inverted situation was obtained by impregnation of interstitial voids with a high-RI semiconductor. Following the inversion of the scattering ensemble, a dramatic change in the stop-bandwidth and angular dispersion of the stop-band were observed. The spontaneous emission from an incomplete photonic crystal is anisotropic to an extent which depends on the angular dispersion of the stop-band: it is suppressed in the middle of the stop-band and amplified at the stop-band edges. The amplified spontaneous emission (ASE) regime is the result of interplay between the photonic and electronic energy bandstructures of the photonic crystal. This effect is considered to be a precursor for stimulated emission.",

author = "Romanov, \{S. G.\} and Fokin, \{A. V.\} and Yates, \{H. M.\} and Pemble, \{M. E.\} and Johnson, \{N. P.\} and \{De La Rue\}, \{R. M.\}",

year = "2000",

doi = "10.1049/ip-opt:20000346",

language = "English",

volume = "147",

pages = "138--144",

journal = "IEE Proceedings: Optoelectronics",

issn = "1350-2433",

publisher = "Institution of Engineering and Technology",

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TY - JOUR

T1 - Opal-based composites as photonic crystals

AU - Romanov, S. G.

AU - Fokin, A. V.

AU - Yates, H. M.

AU - Pemble, M. E.

AU - Johnson, N. P.

AU - De La Rue, R. M.

PY - 2000

Y1 - 2000

N2 - The photonic energy band structure of a 3D, face-centred cubic package of silica balls (synthetic opal) was studied for both the positive refractive index (RI) contrast (RIball>RIvoid) and inverted contrast (RIballvoid) situations. The inverted situation was obtained by impregnation of interstitial voids with a high-RI semiconductor. Following the inversion of the scattering ensemble, a dramatic change in the stop-bandwidth and angular dispersion of the stop-band were observed. The spontaneous emission from an incomplete photonic crystal is anisotropic to an extent which depends on the angular dispersion of the stop-band: it is suppressed in the middle of the stop-band and amplified at the stop-band edges. The amplified spontaneous emission (ASE) regime is the result of interplay between the photonic and electronic energy bandstructures of the photonic crystal. This effect is considered to be a precursor for stimulated emission.

AB - The photonic energy band structure of a 3D, face-centred cubic package of silica balls (synthetic opal) was studied for both the positive refractive index (RI) contrast (RIball>RIvoid) and inverted contrast (RIballvoid) situations. The inverted situation was obtained by impregnation of interstitial voids with a high-RI semiconductor. Following the inversion of the scattering ensemble, a dramatic change in the stop-bandwidth and angular dispersion of the stop-band were observed. The spontaneous emission from an incomplete photonic crystal is anisotropic to an extent which depends on the angular dispersion of the stop-band: it is suppressed in the middle of the stop-band and amplified at the stop-band edges. The amplified spontaneous emission (ASE) regime is the result of interplay between the photonic and electronic energy bandstructures of the photonic crystal. This effect is considered to be a precursor for stimulated emission.

UR - https://www.scopus.com/pages/publications/0033751843

U2 - 10.1049/ip-opt:20000346

DO - 10.1049/ip-opt:20000346

M3 - Article

AN - SCOPUS:0033751843

SN - 1350-2433

VL - 147

SP - 138

EP - 144

JO - IEE Proceedings: Optoelectronics

JF - IEE Proceedings: Optoelectronics

IS - 2

ER -

Opal-based composites as photonic crystals

Abstract

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