Red edge photophysics of ethanolic rhodamine 101 and the observation of laser cooling in the condensed phase

J. L. Clark, P. F. Miller, Gary Rumbles

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

Laser cooling in fluid solutions of the laser dye rhodamine 101 in acidified ethanol has been observed when the molecule is excited into the low-energy tail of the absorption spectrum, at energies in the region 585-1593 cm-1 lower in energy than the 0-0 band origin at 590 nm. The most efficient cooling is achieved when the laser is tuned to 615 nm when a net cooling power of 0.37 mW per 100 mW of pumping power is observed. In this paper, details leading up to this unique observation are documented: in particular, the quantum efficiencies in highly concentrated solutions and the characterization of anti-Stokes fluorescence as a nonintrusive temperature sensor.

Original languageEnglish
Pages (from-to)4428-4437
Number of pages10
JournalJournal of Physical Chemistry A
Volume102
Issue number24
Publication statusPublished - Jun 11 1998

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Laser cooling
Rhodamines
laser cooling
rhodamine
Cooling
Dye lasers
Temperature sensors
Quantum efficiency
cooling
Absorption spectra
Ethanol
Fluorescence
temperature sensors
dye lasers
Molecules
Fluids
energy
Lasers
quantum efficiency
pumping

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Red edge photophysics of ethanolic rhodamine 101 and the observation of laser cooling in the condensed phase. / Clark, J. L.; Miller, P. F.; Rumbles, Gary.

In: Journal of Physical Chemistry A, Vol. 102, No. 24, 11.06.1998, p. 4428-4437.

Research output: Contribution to journalArticle

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