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
收藏
页码：1282 / 1293
页数：12
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