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SPECIAL AMO PHYSICS SEMINAR


"Excimer-Pumped Atomic Lasers: A Novel Platform for Studying Laser Physics and"


J. Darby Hewitt
Laboratory for Optical Physics and Engineering
University of Illinois at Urbana-Champaign


ABSTRACT 

Alkali-rare gas photodissociation lasers are pumped by the photoexcitation of atomic collision pairs on free→free transitions. Subsequent rapid dissociation of the excited two-atom complex populates an excited state of the alkali atom, from which lasing occurs. Because these excimer-pumped atomic laser (XPAL) systems rely on atom pair collisions to achieve lasing, the behavior of these laser systems in operation can provide a wealth of information about atom-atom interactions. Additionally, the breadth of the absorption feature on which pumping occurs makes these systems attractive for experimentally probing the requisite energy difference between the two upper states of a three-level laser system, because this energy difference can be continuously tuned by varying the pumping frequency. The XPAL class of lasers will be introduced, and recent results pertaining to three-level laser physics and proposed investigations into Cs-Xe excited-state dynamics will be discussed.


Monday, November 5, 2012
IQSE 578, 4:00 p.m.
Mitchell Physics Building


Institute for Quantum Science and Engineering
Texas A&M University

(Coffee and Cookies to be served at 3:45 p.m.)

Host: Marlan Scully