Hemispherical resonators with embedded nanocrystal quantum rod emitters

被引：27

作者：

Haase, J. ^{[1
]}

Shinohara, S. ^{[2
]}

Mundra, P.

Risse, G. ^{[3
]}

Lyssenko, V. G. ^{[1
]}

Froeb, H. ^{[1
]}

Hentschel, M. ^{[2
]}

Eychmueller, A.

Leo, K. ^{[1
]}

机构：

[1] Tech Univ Dresden, Inst Angew Photophys, D-01062 Dresden, Germany

[2] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany

[3] Gesell Forderung Med Bio & Umwelttechnol GMBU eV, D-01317 Dresden, Germany

来源：

APPLIED PHYSICS LETTERS | 2010年 / 97卷 / 21期

关键词：

SPHERICAL MICROCAVITY; COMPOSITE; LASER;

D O I：

10.1063/1.3517566

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a technique to prepare hemispherical resonators on a distributed Bragg reflector (DBR). This so-called hydrophobic spreading allows the creation of hemispherical structures with diameters ranging from 5 to 50 mu m. By embedding semiconductor nanocrystal quantum rods (NQRs) into these structures, we achieve a coupling of their emission into whispering-gallery modes. Although the NQR-emission is confined in three dimensions, the DBR is transparent for the excitation, allowing selective excitation of different regions of the hemisphere. Employing a two-dimensional model to approximately describe relevant modes, we are able to estimate the refractive index and diameters of the hemispheres from spectral data. (C) 2010 American Institute of Physics. [doi:10.1063/1.3517566]

引用

页数：3