Tunable Fano interference effect in coupled-microsphere resonator-induced transparency
Tunable Fano interference effect in coupled-microsphere resonator-induced transparency
复制标题
DOI：
10.1364/josab.26.000813
复制
发表时间：
2009-04
影响因子：
1.9
通讯作者：
M. Tomita;K. Totsuka;R. Hanamura;Takahiro Matsumoto
中科院分区：
文献类型：
--
作者：
M. Tomita;K. Totsuka;R. Hanamura;Takahiro Matsumoto
我们研究了超高Q值二氧化硅微球系统中两个回音壁模式之间的干涉效应，其中微球的谐振频率通过热调谐精确控制。当第二球的共振频率失谐时，耦合腔诱导透明的对称透射峰被整形为类似于原子系统中Fano效应的尖锐非对称谱。共振模式的频率偏移作为两个球之间的耦合强度的函数，表明两个回音壁模式的配置混合。观测结果与计算结果进行了比较，并讨论了在相空间中的双螺旋结构在透射场。
We investigated interference effect between two whispering gallery modes in a system of ultrahigh-Q silica microspheres in which the resonance frequencies of spheres were precisely controlled through thermal tuning. A symmetric transmission peak of coupled—resonator—induced transparency reshaped into a sharp asymmetric spectrum similar to Fano effect in atomic system as the resonance frequency of the second sphere was detuned. The resonance modes showed frequency shifts as a function of the coupling strength between the two spheres, indicating that two whispering gallery modes were configurationally mixed. The observations were compared with calculations and discussed using double-spiral structures in the phase space in the transmitted field.