Comparison of the Lasing Modes of a Microdisk and a Microring

被引：0
|
作者：
Zolotukhina, Anna [1 ]
Spiridonov, Alexander [1 ]
Karchevskii, Evgenii [1 ]
Nosich, Alexander I. [2 ]
机构：
[1] Kazan Fed Univ, Dept Appl Math, Kazan 420008, Russia
[2] Inst Radiophys & Elect NASU, Lab Micro & Nano Opt, UA-61085 Kharkov, Ukraine
来源：
2015 17TH INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS (ICTON) | 2015年
关键词：
lasers; laser resonators; lasing modes; microdisk; microring; threshold of lasing; THRESHOLDS;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Microcavity lasers shaped as thin circular disks are famous for the ultra-low thresholds of their whispering-gallery (WG) modes. We considered a two-dimensional (2-D) model of such a laser in free space with a ring-like active region and compared the characteristics of its modes with the modes of an active microring, i.e. a similar disk with a concentric hole. The comparison showed that a microring has considerable rarefaction effect in terms of emission thresholds, accompanied by the blue-shift of emission spectra. If the ring becomes narrower than half-wavelength in material, then all lasing modes obtain catastrophically high thresholds.
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页数：4
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