Squeezing properties of nondegenerate three-level laser with degenerate parametric amplifier

  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract

    We study the squeezing properties of the light generated by nondegenerate three-level laser in which the three-level atoms are in cascade configuration with degenerate parametric oscillator. We obtain the c-number Langevin equations associated with the normal ordering using the pertinent master equation. Making use of the solutions of the c-number Langevin equations, we calculate the quadrature variances. The results show that the two-mode light produced by the system under consideration is in squeezed state and the squeezing occurs in the minus quadrature. The degree of squeezing increase with the linear gain coefficient and almost perfect squeezing can be obtained for large values of the linear gain coefficient and the atoms initially prepared in lower level slightly greater than in the upper level. Moreover, the presence of nonlinear crystal increases the degree of squeezing for single mode and two-mode lights.




  • Keywords

    Three-Level Laser; Parametric Oscillator; Quadrature Squeezing.

  • References

      [1] Fesseha Kassahun, Fundamentals of Quantum Optics (Lulu Press Inc., North Car-olina,2008).

      [2] Fesseha Kassahun,Three-Level Laser Dynamics with the Atoms Pumped by Electron Bombardment, (Addis Ababa University,2012).

      [3] M.K.Olsen L.I.Plimak, A.Z.Khoury, Quantum analysis of the Non-degenerate Optical Parametric Amplifier with injected signal, Opt.Comm. 215, (2003)101-111. https://doi.org/10.1016/S0030-4018(02)02235-6.

      [4] E.Alebachew, K.Fesseha, Opt.Commun.265, (2006) 314. https://doi.org/10.1016/j.optcom.2006.03.017.

      [5] M C Teich and B E A Saleh. Quantum Opt. l (1989) 152-191, Printed in the UK.

      [6] Berihu Teklu. Parametric oscillation with the cavity mode driven by coherent light and coupled to the squeezed vacuum reservoir. Addis Ababa University, Ethiopia (2005). https://doi.org/10.1016/j.optcom.2005.12.004.

      [7] Fesseha Kassahun, Opt. Commun. 284, 1357 (2011). https://doi.org/10.1016/j.optcom.2010.11.026.

      [8] N. A. Ansari, Phys. Rev. A 46, 1560 (1992). https://doi.org/10.1103/PhysRevA.46.1560.

      [9] S. L. Braunstein and A. K. Pati, Quantum Information Theory with Continuous Variables Phys.282,706 (1998).

      [10] S. Tesfa J. Phys. B: At. Mol. Opt. Phys. 41, 145501(2008). https://doi.org/10.1088/0953-4075/41/14/145501.




Article ID: 31619
DOI: 10.14419/ijpr.v9i1.31619

Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.