Control of Goos-Hanchen shift of a light beam via a coherent driving field

TL;DR

This paper proposes a method to control the lateral Goos-Hanchen shift of a light beam using a coherent control field in a cavity with a two-level atomic medium, enabling adjustable positive or negative shifts.

Contribution

It introduces a novel scheme to manipulate the Goos-Hanchen shift via a coherent control field without altering the cavity structure.

Findings

Lateral shifts can be tuned by adjusting the control field's intensity and detuning.

The scheme allows enhancement of the lateral shift at a fixed incident angle.

Positive or negative shifts are achievable under suitable control conditions.

Abstract

We present a proposal to manipulate the Goos-Hanchen shift of a light beam via a coherent control field, which is injected into a cavity configuration containing the two-level atomic medium. It is found that the lateral shifts of the reflected and transmitted probe beams can be easily controlled by adjusting the intensity and detuning of the control field. Using this scheme, the lateral shift at the fixed incident angle can be enhanced (positive or negative) under the suitable conditions on the control field, without changing the structure of the cavity.