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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 31, Iss. 5 — May. 1, 2014
  • pp: 1217–1222

Atomic coherences of on-resonant and off-resonant two-photon absorptions in a ladder-type atomic system

Han Seb Moon and Heung-Ryoul Noh  »View Author Affiliations


JOSA B, Vol. 31, Issue 5, pp. 1217-1222 (2014)
http://dx.doi.org/10.1364/JOSAB.31.001217


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Abstract

We report the physical origins of the on-resonant and off-resonant two-photon absorption (TPA) in an open-ladder-type atomic system of the 5S1/2(F=1)-5P3/2(F=0,1,2)-5D5/2(F=1,2,3) transitions in Rb87 atoms. When the on-resonant TPA, including electromagnetically induced transparency (EIT), was transformed into the off-resonant TPA according to the coupling laser frequency detuning, we clarified the dynamics of the atomic coherences by decomposing into the two-photon coherence (TC) and the crossover coherence (CC) terms mixed between one-photon coherence (OC) and TC terms. The physical origins of the two TPAs were completely different; the cause of the on-resonant TPA was the CC term, and that of the off-resonant TPA was the TC term.

© 2014 Optical Society of America

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(020.3690) Atomic and molecular physics : Line shapes and shifts
(020.4180) Atomic and molecular physics : Multiphoton processes
(300.6210) Spectroscopy : Spectroscopy, atomic

ToC Category:
Atomic and Molecular Physics

History
Original Manuscript: December 23, 2013
Revised Manuscript: March 5, 2014
Manuscript Accepted: April 1, 2014
Published: April 30, 2014

Citation
Han Seb Moon and Heung-Ryoul Noh, "Atomic coherences of on-resonant and off-resonant two-photon absorptions in a ladder-type atomic system," J. Opt. Soc. Am. B 31, 1217-1222 (2014)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-31-5-1217


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