Opal-based composites as photonic crystals

被引：10

作者：

Romanov, SG ^{[1
]}

Fokin, AV

Yates, HM

Pemble, ME

Johnson, NP

De La Rue, RM

机构：

[1] Univ Glasgow, Dept Elect & Elect Engn, Optoelect Res Grp, Glasgow G12 8QQ, Lanark, Scotland

[2] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[3] Univ Salford, Dept Chem, Salford M5 4WT, Lancs, England

来源：

IEE PROCEEDINGS-OPTOELECTRONICS | 2000年 / 147卷 / 02期

关键词：

D O I：

10.1049/ip-opt:20000346

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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.

引用

页码：138 / 144

页数：7

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