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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 17, Iss. 5 — May. 1, 2000
  • pp: 820–826

Nonlinear excitation by quantum interference in a Doppler-broadened rubidium atomic system

N. Mulchan, D. G. Ducreay, Rodolfo Pina, Min Yan, and Yifu Zhu  »View Author Affiliations

JOSA B, Vol. 17, Issue 5, pp. 820-826 (2000)

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We analyze nonlinear excitation in a four-level atomic system that exhibits electromagnetically induced transparency induced by a strong coupling laser. We show that, at the line center of the atomic transition, the nondegenerate two-photon excitation in the dressed states can be enhanced by constructive quantum interference in two excitation paths while the linear absorption is inhibited by destructive quantum interference. We report an experimental study of the interference-enhanced two-photon absorption in a multilevel Λ-type rubidium atomic system and compare the measurements with the theoretical calculations.

© 2000 Optical Society of America

OCIS Codes
(190.4180) Nonlinear optics : Multiphoton processes
(270.1670) Quantum optics : Coherent optical effects
(270.4180) Quantum optics : Multiphoton processes
(300.6410) Spectroscopy : Spectroscopy, multiphoton
(300.6420) Spectroscopy : Spectroscopy, nonlinear

N. Mulchan, D. G. Ducreay, Rodolfo Pina, Min Yan, and Yifu Zhu, "Nonlinear excitation by quantum interference in a Doppler-broadened rubidium atomic system," J. Opt. Soc. Am. B 17, 820-826 (2000)

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