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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 1, Iss. 2 — Apr. 1, 1984
  • pp: 164–168

Multiphoton processes in two-level atoms in two intense pump beams

G. S. Agarwal and N. Nayak  »View Author Affiliations


JOSA B, Vol. 1, Issue 2, pp. 164-168 (1984)
http://dx.doi.org/10.1364/JOSAB.1.000164


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Abstract

The dynamical behavior of a two-level atom under the influence of two intense pump beams is examined. Exact equations for the nonlinear susceptibilities to all orders in the field strengths are derived. Numerical results for the nonlinear susceptibilities giving the absorption of the radiation from either of the pump beams and the generation of the four-wave mixing signal are given. The susceptibility for four-wave mixing, in addition to showing various saturation peaks, shows a peak at ω1 = ω2 even in the case of radiative relaxation. Higher-order multiphoton peaks in the absorption spectra are found to be extremely sensitive to the temporal fluctuations in the pumps.

© 1984 Optical Society of America

Citation
G. S. Agarwal and N. Nayak, "Multiphoton processes in two-level atoms in two intense pump beams," J. Opt. Soc. Am. B 1, 164-168 (1984)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-1-2-164


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References

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  12. Note that, since both the fields can be strong, there is really no distinction between probe and pump.
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  14. For example, the saturation effects in the susceptibility ψ(5) (−3ω2 + 2ω1, ω2, ω22, −ω1, −ω1), which describes higher-order coherent anti-Stokes Raman Spectroscopy [A. Compaan, E. Wiener-Avnear, and S. Chandra, Phys. Rev. A17, 1083 (1978)] can be studied.
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  18. In the framework of higher-order perturbation theory, H. Friedmann and A. D. Wilson-Gordon [Phys. Rev. A26, 2768–2777 (1982)] have also found the presence of the extra resonance, even in the case of radiative relaxation.
  19. The values at the peak ω1 = ω2 calculated from the analytic formulas (4.4) and (4.5) are in agreement with the numerical computations.

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