Manipulation of optomechanically induced transparency and absorption by indirectly coupling to an auxiliary cavity mode

TL;DR

This paper theoretically explores how an auxiliary cavity mode can be used to control optomechanically induced transparency and absorption in a microcavity system, enabling tunable optical interference effects.

Contribution

It introduces a novel method to manipulate multiple-pathway interference in a microcavity system for controlling transparency and absorption.

Findings

Multiple-pathway interference can induce absorption dips within transparency windows.

Switching between OMIT and OMIA is achievable by tuning interference parameters.

The system offers a new platform for all-optical information processing.

Abstract

We theoretically study the optomechanically induced transparency (OMIT) and absorption(OMIA) phenomena in a single microcavity optomechanical system, assisted by an indirectly-coupledauxiliary cavity mode. We show that the interference effect between the two optical modes playsan important role and can be used to control the multiple-pathway induced destructive or construc-tive interference effect. The three-pathway interference could induce an absorption dip within thetransparent window in the red sideband driving regime, while we can switch back and forth betweenOMIT and OMIA with the four-pathway interference. The conversion between the transparencypeak and absorption dip can be achieved by tuning the relative amplitude and phase of the multiplelight paths interference. Our system proposes a new platform to realize multiple pathways inducedtransparency and absorption in a single microcavity and a feasible way for realizing all-opticalinformation processing.