Tunable Goos–Hänchen Shift and Polarization Beam Splitting Through a Cavity Containing Double Ladder Energy Level System

Abstract

The present paper theoretically demonstrates tunable Goos-Hänchen (GH) shift and beam splitting of the polarized light reflected from the cavity containing the double ladder energy level system. Simultaneously opposite GH shifts for left-circularly polarized (LCP) and right-circularly polarized (RCP) beams can be achieved under asymmetric field conditions. By adjusting the intensity (Rabi frequency) of probe or drive field, the GH shifts of LCP and RCP probe beams are manipulated at the same time. We also discuss the effects of probe field frequency detuning on GH shifts and identify the parameters region to obtain a large separate distance (∼320 μm) between LCP and RCP probe beams.

Non-specular reflection of a narrow spatially phase-modulated Gaussian beam

“…beam splitters [27], de/multiplexers [28], the monitoring of local electric and magnetic fields [29] or optical differential operation and image edge detection [30] have been proposed on the basis of the GH effect.…”

The general treatment of giant Goos-Hänchen shift in a slab cavity

“…In this model, the cavity is filled by a material that mostly can be controlled through external fields or other stimulations, while the two edge layers remain fixed. Many schemes of atomic gases are used to fill the slab cavity including two-level atoms [22,23], three levels such as scheme [24][25][26], four levels such as double ladder and N schemes [27][28][29][30], Rydberg state [31]. Other materials with or without atomic gases techniques are employed such as graphene [28,32], quantum walls [33], inhomogeneous media [34], materials having doppler broadening effect [35], and colloidal ferrofluids [36].…”