Whispering gallery modes in zinc oxide micro- and nanowires

被引：75

作者：

Czekalla, Christian ^{[1
]}

Nobis, Thomas ^{[1
]}

Rahm, Andreas ^{[1
]}

Cao, Bingqiang ^{[1
]}

Zuniga-Perez, Jesus ^{[1
]}

Sturm, Chris ^{[1
]}

Schmidt-Grund, Ruediger ^{[1
]}

Lorenz, Michael ^{[1
]}

Grundmann, Marius ^{[1
]}

机构：

[1] Univ Leipzig, Inst Expt Phys 2, Fak Phys & Geowissensch, D-04103 Leipzig, Germany

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2010年 / 247卷 / 06期

关键词：

ELECTRON-HOLE PLASMA; RANDOM LASER ACTION; STIMULATED-EMISSION; DIELECTRIC RESONATORS; ZNO NANOWIRES; CROSS-SECTION; OPTICAL-GAIN; MICROCAVITY; MICROLASERS; REFLECTION;

D O I：

10.1002/pssb.200945527

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Optical whispering gallery mode (WGM) resonances have been observed in zinc oxide micro- and nanowire cavities. Using model calculations, the experimentally observed mode spectrum was reproduced. The effect has been observed for wire radii between 100 nm and 10 mu m corresponding to angular mode numbers from 1 to about 250. The whispering gallery effect was used to determine the refractive index of the wires as a function of the photon energy and temperature. Under high excitation conditions, WGM lasing was observed. Two methods for calculating the complex resonant modes are presented: a simple plane wave model and the numerical solution of the Helmholtz equation for the given resonator geometry.

引用

页码：1282 / 1293

页数：12

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