Ultralow lasing thresholds of π-type supermodes in cyclic photonic molecules composed of submicron disks with monopole and dipole modes

被引：25

作者：

Smotrova, Elena I. ^{[1
]}

Nosich, Alexander I.

Benson, Trevor M.

Sewell, Phillip

机构：

[1] NASU, Inst Radiophys & Elect, UA-61085 Kharkov, Ukraine

[2] Univ Nottingham, George Green Inst Electromagnet Res, Nottingham NG7 2RD, England

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2006年 / 18卷 / 17-20期

基金：

英国工程与自然科学研究理事会;

关键词：

dipole mode; lasing eigenvalue problem; linear threshold; microcavity laser; monopole mode; photonic molecule;

D O I：

10.1109/LPT.2006.882306

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：

Cyclic photonic molecules (CPMs) composed of an even number of identical submicron-size circular-disk active resonators in free space are studied in two dimensions. Cold-cavity lasing frequencies and threshold values of material gain are extracted from an electromagnetic eigenvalue problem with exact boundary and radiation conditions. We show that assembling several small cavities in a tightly packed CPM efficiently lowers the thresholds of optically coupled nonwhispering-gallery modes of the lowest values (i.e., 0 and 1) of the azimuth index in each cavity provided that high antisymmetry is arranged.

引用

页码：1993 / 1995

页数：3