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Development of an organic dye solution for laser cooling by anti-Stokes fluorescence

Published online by Cambridge University Press:  21 March 2011

Jarett L. Bartholomew ,
Peter A. DeBarber ,
Bauke Heeg  and
Garry Rumbles
Jarett L. Bartholomew
Affiliation:
MetroLaser, Inc., Irvine, CA 92614, U.S.A.
Peter A. DeBarber
Affiliation:
MetroLaser, Inc., Irvine, CA 92614, U.S.A.
Bauke Heeg
Affiliation:
MetroLaser, Inc., Irvine, CA 92614, U.S.A.
Garry Rumbles
Affiliation:
Center for Electronic Materials and Devices, Imperial College, London, U.K.
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Abstract

Several independent groups have observed optical cooling by means of anti-Stokes luminescence in condensed media. The most promising materials are grouped into two categories: ion-doped glasses and organic dye solutions. It is this latter group that we focus our efforts on. Recent studies by our group show that irradiating a solution of rhodamine 101 in the long wavelength wing of the absorption spectrum results in the observation of optical cooling. To improve upon the initial observation of a few degree drop in temperature requires a better understanding of the conditions and phenomena leading to anti-Stokes luminescence in dye solutions. We develop a thermal lensing experiment to obtain fluorescence quantum yields of various dye solutions. The importance of concentration, choice of solvent, deuteration, and acidification are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 667: Symposium G – Luminescence and Luminescent Materials , 2001 , G1.7
Copyright
Copyright © Materials Research Society 2001

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References

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