Laboratory of Micro and Nano Optics, Institute of Radio-Physics and Electronics NASU, Kharkiv, Ukraine.
Opt Lett. 2013 Jun 15;38(12):2059-61. doi: 10.1364/OL.38.002059.
The lasing spectra and thresholds of a selectively pumped photonic molecule composed of two microdisks is investigated using effective index approximation and full-wave 2-D electromagnetic equations. The lasing eigenvalue problem formulation is used to find modal frequencies and threshold values of material gain. The influence of the optical coupling between active and passive microdisks on the lasing eigenvalues and directionalities of emission is studied. It is shown that for strong coupling the effect of making one of the resonators passive leads to the doubling of the threshold.
采用有效折射率近似和全二维电磁场方程研究了由两个微盘组成的选择性抽运光子分子的激光光谱和阈值。利用激光本征值问题公式来寻找材料增益的模态频率和阈值值。研究了有源和无源微盘之间的光学耦合对激光本征值和发射方向性的影响。结果表明，对于强耦合，使其中一个谐振器变为无源的效果会导致阈值增加一倍。
