Abstract
The susceptibility of a two-level atomic medium enclosed in a cavity is controlled and modified by a control driving field and cavity coupling. The susceptibility of the medium is related to the dielectric function, and reflection & transmission coefficients. The transmission and reflection coefficients are related to Goos–Hänchen Shifts in the reflection and transmission beam. Negative and positive lateral GH-shifts, and Giant shifts in the transmission and reflection beams are investigated under the effect of cavity coupling and Kerr nonlinearity. A giant shift of 2000λ in the reflection and 1000λ in the transmission beam is calculated. It is clear that both modified Giant shifts and lateral shifts are influenced by changes in the refractive index. So it will have potential applications in sensing and trapping of the optical data. The controlled and considerably enhanced GH shift show the importance of utilizing the proposed scheme for the construction of optical sensors and optical devices.
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