Colloidal quantum dots in all-dielectric high-Q pillar microcavities

被引：63

作者：

Kahl, Matthias

Thomay, Tim

Kohnle, Verena

Beha, Katja

Merlein, Jorg

Hagner, Matthias

Halm, Andreas

Ziegler, Jan

Nann, Thomas

Fedutik, Yuri

Woggon, Ulrike

Artemyev, Mikhail

Perez-Willard, Fabian

Leitenstorfer, Alfred

Bratschitsch, Rudolf ^{[1
]}

机构：

[1] Univ Konstanz, Dept Phys, D-78464 Constance, Germany

[2] Univ Konstanz, Ctr Appl Photon, D-78464 Constance, Germany

[3] Univ E Anglia, Sch Chem Sci & Pharm, Norwich NR4 7TJ, Norfolk, England

[4] Univ Dortmund, D-44221 Dortmund, Germany

[5] Belarusian State Univ, Minsk 220080, BELARUS

[6] Carl Zeiss NTS GmbH, D-73447 Oberkochen, Germany

来源：

NANO LETTERS | 2007年 / 7卷 / 09期

关键词：

D O I：

10.1021/nl071812x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have fabricated all-dielectric high-Q optical pillar resonators with embedded colloidal CdSe/ZnS quantum dots or rods as light emitters by focused ion beam milling. Three-dimensional light confinement and distinct pillar microcavity modes are observed. Results from a waveguide model for the mode patterns and their spectral positions are in excellent agreement with the experimental data. Cavities with elliptical cross sections show higher quality factors in the short axis direction than do circular resonators of the same cross-sectional area.

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页码：2897 / 2900

页数：4

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