Smotrova Elena I, Benson Trevor M, Sewell Phillip, Ctyroky Jiri, Nosich Alexander I
Institute of Radio-Physics and Electronics, National Academy of Sciences of Ukraine, Ukraine.
J Opt Soc Am A Opt Image Sci Vis. 2008 Nov;25(11):2884-92. doi: 10.1364/josaa.25.002884.
The lasing spectra and threshold values of material gain for the dipole-type supermodes of an active microdisk concentrically coupled with an external passive microring are investigated. TE polarized modes are treated accurately using the linear electromagnetic formalism of the 2-D lasing eigenvalue problem (LEP) with exact boundary and radiation conditions. The influence of the microring on the lasing frequencies and thresholds is studied numerically, demonstrating threshold reduction opportunities. This is explained through the analysis of the mode near-field patterns and the degree of their overlap with the active region, as suggested by the optical theorem applied to the LEP solutions.
研究了与外部无源微环同心耦合的有源微盘偶极型超模的激光光谱和材料增益阈值。利用具有精确边界和辐射条件的二维激光本征值问题（LEP）的线性电磁形式精确处理TE偏振模式。数值研究了微环对激光频率和阈值的影响，展示了降低阈值的可能性。如应用于LEP解的光学定理所表明的，通过分析模式近场图案及其与有源区的重叠程度对此进行了解释。
