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Title:Laser physics and spectroscopy in alkali vapor-noble gas mixtures
Author(s):Mironov, Andrey
Director of Research:Eden, James Gary
Doctoral Committee Chair(s):Eden, James Gary
Doctoral Committee Member(s):Carney, Paul Scott; Cunningham, Brian T.; Gruebele, Martin
Department / Program:Electrical & Computer Eng
Discipline:Electrical & Computer Engr
Degree Granting Institution:University of Illinois at Urbana-Champaign
alkali lasers
laser efficiency
optical pumping
circular polarization
spin exchange
Abstract:Experiments are described in which the lower excited states of alkali-rare gas diatomic molecules are probed in alkali vapor-noble gas mixtures by laser spectroscopy. A two color scheme for pumping the alkali D2 line laser has been demonstrated that offers a quantum efficiency above one. More than 100 cm^-1 of thermal energy is extracted from the gain medium for every laser photon. An optical amplifier based on free-free transition of alkali-rare gas pairs has been demonstrated in the 793.3-794.3 nm region of the spectrum. Lasing on specific hyperfine atomic transitions-and, as a result, a 50% D2 line laser efficiency increase-has been demonstrated when alkali vapor-noble gas mixtures are pumped with a circularly polarized light in contrast to a classical pumping scheme (linearly polarized light).
Issue Date:2016-07-11
Rights Information:Copyright 2016 Andrey Mironov
Date Available in IDEALS:2016-11-10
Date Deposited:2016-08

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