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Title:Broadband Optical Cooling Of Alh+ To The Rotational Ground State
Author(s):Seck, Christopher M.
Contributor(s):Odom, Brian C.; Lien, Chien-Yu
Subject(s):Cold/Ultra-cold/Physics
Abstract:We demonstrate that a single spectrally filtered femtosecond laser, tuned to the electronic A-X transition of trapped AlH$^{+}$, can efficiently cool rotations from room temperature to the ground state. The nearly diagonal Franck-Condon-Factors between the electronic X and A states create semi-closed cycling transitions between the vibrational ground states of the X and A states. Parity-preserving electronic cycling cools to the two lowest rotational levels with a 10 $\mu$s timescale set by repeated electronic relaxation, and collection into the lowest rotational level relies upon a slower vibrational relaxation event setting the overall cooling timescale to 140 ms. The population distribution among the rotational levels is detected by $(1+1’)$ resonance-enhanced multiphoton dissociation (REMPD) and time-of-flight mass-spectrometry (TOFMS).
Issue Date:2014-06-19
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:Seck, C.M.; Odom, B.C.; Lien, C. BROADBAND OPTICAL COOLING OF AlH+ TO THE ROTATIONAL GROUND STATE. Proceedings of the International Symposium on Molecular Spectroscopy, Urbana, IL, June 16-21, 2014. DOI: 10.15278/isms.2014.RH10
Genre:CONFERENCE PAPER/PRESENTATION
Type:Text
Language:English
URI:http://hdl.handle.net/2142/51171
DOI:10.15278/isms.2014.RH10
Rights Information:Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/
Date Available in IDEALS:2014-09-17
2015-04-14


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