The European Physical Journal D

, Volume 53, Issue 2, pp 141–146

Study of width and height of EIT resonance in a Doppler broadened five-level system with varying probe power

  • M. M. Hossain
  • S. Mitra
  • S. Chakrabarti
  • D. Bhattacharyya
  • B. Ray
  • P. N. Ghosh
Atomic Physics

DOI: 10.1140/epjd/e2009-00108-7

Cite this article as:
Hossain, M., Mitra, S., Chakrabarti, S. et al. Eur. Phys. J. D (2009) 53: 141. doi:10.1140/epjd/e2009-00108-7

Abstract

We report the experimental observation of electromagnetically induced transparency (EIT) in a Doppler broadened rubidium vapour at room temperature for different probe intensities at a fixed pump intensity in a five-level Λ-type system formed by the D2 transition of 85Rb. For a constant pump intensity, we find that the EIT width and height change with the variation of probe intensity. We observe a nonlinear variation of the height of the EIT peak and a linear variation of the width (FWHM) of the EIT signal with probe intensity. In the Doppler broadened multilevel system, we also observe the velocity selective dips along with the EIT signal. A numerical simulation of the probe response signal based on density matrix representation in a five-level system is carried out to reproduce the experimentally observed spectra.

PACS

42.50.Gy Effects of atomic coherence on propagation, absorption, and amplification of lightelectromagnetically induced transparency and absorption42.50.Hz Strong-field excitation of optical transitions in quantum systemsmultiphoton processesdynamic Stark shift

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • M. M. Hossain
    • 1
  • S. Mitra
    • 1
  • S. Chakrabarti
    • 1
  • D. Bhattacharyya
    • 1
  • B. Ray
    • 1
  • P. N. Ghosh
    • 2
  1. 1.Department of PhysicsUniversity of CalcuttaKolkataIndia
  2. 2.Jadavpur UniversityKolkataIndia