Quasi-whispering gallery modes in ZnO microtowers
Quasi-whispering gallery modes in ZnO microtowers
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DOI：
10.1007/s10946-012-9266-y
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发表时间：
2012-06
影响因子：
0.9
通讯作者：
V. Markushev;M. Ryzhkov;Ch. M. Briskina-;A. A. Borodkin-A.;S. Rumyantsev;W. Shen;D. H. Xu;V. L. Lyaskovskii-
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文献类型：
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作者：
V. Markushev;M. Ryzhkov;Ch. M. Briskina-;A. A. Borodkin-A.;S. Rumyantsev;W. Shen;D. H. Xu;V. L. Lyaskovskii-
我们表明，ZnO薄膜的激光光谱组成的颗粒，看起来像微型塔代表两个波段，其峰值之间的光谱距离几乎恒定。通过数值分析，我们表明这两个频带是由于回音壁模式（WGM），其中一个频带对应于准回音壁模式。因此，我们在这里获得的准WGM的存在的第一个明确的证明，并显示，此外，频带的宽度是由随机传播的尺寸的ZnO颗粒在激光部分。
We show that the laser spectra of ZnO films composed of particles that look like microtowers represent two bands with practically constant spectral distances between their peaks. By numerical analysis, we show that these two bands are due to whispering gallery modes (WGM), and one of these bands corresponds to the quasi-whispering gallery mode. Thus, we obtain here the first clear demonstration of the existence of quasi-WGMs, and show, in addition, that the width of the bands is caused by random spread of sizes of the ZnO particles in the lasing part.