Abstract

The optomechanically induced transparency (OMIT) and Fano resonance are revisited in a rotational cavity system. Our model consists of four mirrors where two mirrors have rotational motion whereas the remaining two are fixed. We notice that the phenomenon of OMIT and Fano resonance depends upon the orbital angular momentum (OAM) of the vortex light. In the presence of OAM, we study the light propagation in the cavity system. It is found that under the influence of OAM and increasing the masses of the rotational mirror, the group delay increases. Remarkably, we measure the OAM states of vortex light using the phenomenon of OMIT.

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