Emission properties of dye-polymer-opal photonic crystals

被引：22

作者：

Romanov, SG ^{[1
]}

Maka, T

Torres, CMS

Müller, M

Zentel, R

机构：

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

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

[3] Berg Univ Wuppertal, Inst Mat Sci, D-42097 Wuppertal, Germany

[4] Berg Univ Wuppertal, Dept Elect Engn, D-42097 Wuppertal, Germany

[5] Berg Univ Wuppertal, Dept Chem, D-42097 Wuppertal, Germany

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 1999年 / 17卷 / 11期

关键词：

optical polymers; optical propagation in dispersive media; photonic crystals; photon radiation effects;

D O I：

10.1109/50.803002

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 effect of the incomplete photonic bandgap (PBG) provided by the opal template upon the emission properties of the laser dyes (Coumarin 6 and perylene derivative) dissolved in the solidified polymer has been studied. The bandgap of dye-polymer-opal composite is highly anisotropic because of the insufficient refractive index contrast (RIC), moreover, the extent of anisotropy depends on the volume fraction of the polymer, The anisotropic bandgap enforces the corresponding directionality of the emission, but the emission anisotropy is-restricted, as compared with the bandgap anisotropy, within the energy range of the Stocks shift between emission and absorption spectra of the dye. The bands of amplified spontaneous emission, which show the same anisotropy as the bandgap, have been observed. Besides, the isotropic amplified spontaneous emission band has been detected at the high intensity excitation, which band was tentatively understood as the result of the weak localization of photons in the gain medium with embedded scatterers.

引用

页码：2121 / 2127

页数：7

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