Manipulation of Goos-Hänchen shifts in the atomic configuration of mercury via interacting dark-state resonances

H. R. Hamedi, Arash Radmehr, and M. Sahrai
Phys. Rev. A 90, 053836 – Published 19 November 2014

Abstract

We study the manipulation of Goos-Hänchen (GH) shifts for the reflected and transmitted probe light pulses injected into a cavity containing four-level configuration mercury atoms where the probe transition is in the ultraviolet (UV) region with a wavelength of 253.7nm. Different behaviors of the GH shifts can be observed in the absence, or presence, of two driving fields as well as an incoherent pump field. When neither coherent driving fields nor incoherent pumping is turned on, we realize negative reflected GH shifts for anomalous dispersion. Including only one driving field leads to subluminal-based light propagation with positive lateral shifts at certain incident angles. Taking into account the impact of both driving fields, negative GH shifts reappear in the reflected part of the incident light. The origin of this defect is attributed to interacting double dark resonances due to a high-resolution absorption peaks with a very steep negative slope of dispersion in the susceptibility profile. We then show that one can surpass this defect by applying a weak incoherent pumping field to obtain positive GH shifts for both reflected and transmitted light beams. Finally, using the 61P161S0 transition of Hg, we generalize our study to the case where the wavelength of the probe transition is 185nm which is in the vacuum-ultraviolet domain. Although the number of oscillations is now increased, however, similar results are reported with respect to the case of UV transition.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
4 More
  • Received 14 September 2014
  • Revised 28 October 2014

DOI:https://doi.org/10.1103/PhysRevA.90.053836

©2014 American Physical Society

Authors & Affiliations

H. R. Hamedi1,*, Arash Radmehr2, and M. Sahrai2,3

  • 1Institute of Theoretical Physics and Astronomy, Vilnius University, A. Gostauto 12, LT-01108 Vilnius, Lithuania
  • 2Research Institute for Applied Physics and Astronomy, University of Tabriz, Tabriz, Iran
  • 3Photonics Excellence, University of Tabriz, Tabriz, Iran

  • *Corresponding author: Hamid.R.Hamedi@gmail.com

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 90, Iss. 5 — November 2014

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×