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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 30, Iss. 22 — Nov. 15, 2005
  • pp: 3081–3083

Influence of propagation and external phase in sequential two-photon absorption of femtosecond pulses

H. G. Barros, W. Lozano B., S. S. Vianna, and L. H. Acioli  »View Author Affiliations


Optics Letters, Vol. 30, Issue 22, pp. 3081-3083 (2005)
http://dx.doi.org/10.1364/OL.30.003081


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Abstract

We study the influence of shaping the phase of the optical field when time-delayed femtosecond pulse pairs excite a sequential two-photon transition in rubidium atoms. Propagation through this optically dense medium modifies the pulse profile. When an external phase is introduced into one of the pulses, partial cancellation of the two-photon absorption signal is observed for temporal delays much greater than the pulse duration. This behavior is qualitatively explained in terms of a negative group delay.

© 2005 Optical Society of America

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(270.1670) Quantum optics : Coherent optical effects

ToC Category:
Quantum Optics

Citation
H. G. Barros, W. Lozano B., S. S. Vianna, and L. H. Acioli, "Influence of propagation and external phase in sequential two-photon absorption of femtosecond pulses," Opt. Lett. 30, 3081-3083 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-22-3081

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