Optical resonances created by photonic transitions

摘要

We show that a high-Q optical resonance can be created dynamically, by inducing a photonicntransition between a localized state and a one-dimensional continuum through refractive indexnmodulation. In this mechanism, both the frequency and the external linewidth of a single resonancenare specified by the dynamics, allowing complete control of the resonance properties. An examplenusing photonic crystal heterostructure cavity is demonstrated with numerical simulation. We alsonshow that the reported effect can be accomplished with realistic index modulation strength and