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Title:Quantum beat observations in rubidium vapor
Author(s):Ricconi, Brian
Director of Research:Eden, James G.
Doctoral Committee Chair(s):Eden, James G.
Doctoral Committee Member(s):Gruebele, Martin; Swenson, Gary R.; Carney, Paul S.; DeMarco, Brian L.
Department / Program:Electrical & Computer Eng
Discipline:Electrical & Computer Engr
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Quantum beating
Raman scattering
Four-wave mixing
Pump-probe spectroscopy
Alkali vapor
Abstract:Probing the interactions between a mode-locked laser pulse and saturated rubidium vapor with a pump–probe technique has resulted in observations of coherences within the atom that persist longer than 150 ps. Quantum beats due to the interference between the 7S and 5D_{5/2} energy states were observed by a four-wave mixing process. The difference frequency between the 5D–5P_{3/2} and the 5P_{3/2}–5S transitions was also observed for interpulse delays up to 180 ps. The temporal evolution of the beat amplitude indicates the existence of a superfluorescent process and a scattering process detected simultaneously with the four-wave mixing process. A model was developed to explain the processes and was used to predict the range of pulse parameters for which the scattering process and four-wave mixing could be simultaneously detected.
Issue Date:2012-06-27
Rights Information:Copyright 2012 Brian Ricconi
Date Available in IDEALS:2014-06-28
Date Deposited:2012-05

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