Enhancement of phase-conjugate reflectivity using Zeeman coherence in highly degenerate molecular systems

Nandini Mukherjee
Phys. Rev. A 81, 013823 – Published 26 January 2010

Abstract

A comprehensive theoretical analysis is developed for the vectorial phase conjugation using resonant four-wave mixing (FWM) in a highly degenerate rotational vibrational molecular system. The dynamic Stark shifts, saturation, and Doppler broadening are included for a realistic analysis. It is shown that the electromagnetically induced multilevel coherence controls the nonlinear wave mixing yielding interesting results for the phase conjugate (PC) reflectivity. It turns out that the efficiency of the PC reflectivity is decided by the relative phase of the Zeeman coherence and the population grating. When these two contributions are aligned in phase by a small detuning of the pump frequency, a large PC reflectivity (~20%) is obtained with moderate pump intensity (~500 mW/cm2).

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  • Received 13 August 2009

DOI:https://doi.org/10.1103/PhysRevA.81.013823

©2010 American Physical Society

Authors & Affiliations

Nandini Mukherjee*

  • Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA

  • *Present address: Infrasign LLC, Palo Alto, CA 94306: nandini@infrasign.com.

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Issue

Vol. 81, Iss. 1 — January 2010

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