Fluorescent refrigeration
Patent
·
OSTI ID:870052
- Santa Fe, NM
- Los Alamos, NM
Fluorescent refrigeration is based on selective radiative pumping, using substantially monochromatic radiation, of quantum excitations which are then endothermically redistributed to higher energies. Ultimately, the populated energy levels radiatively deexcite emitting, on the average, more radiant energy than was initially absorbed. The material utilized to accomplish the cooling must have dimensions such that the exciting radiation is strongly absorbed, but the fluorescence may exit the material through a significantly smaller optical pathlength. Optical fibers and mirrored glasses and crystals provide this requirement.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM
- DOE Contract Number:
- W-7405-ENG-36
- Assignee:
- Regents of University of California (Alameda, CA)
- Patent Number(s):
- US 5447032
- OSTI ID:
- 870052
- Country of Publication:
- United States
- Language:
- English
Optical Refrigeration in Nd-Doped Yttrium Aluminum Garnet
|
journal | October 1968 |
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Related Subjects
/62/
absorbed
accomplish
average
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crystals
deexcite
dimensions
emitting
endothermically
energies
energy
energy level
energy levels
excitations
exciting
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exit
fibers
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initially
levels
material
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mirrored
monochromatic
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pumping
quantum
radiant
radiant energy
radiation
radiative
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redistributed
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requirement
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selective radiative
significantly
strongly
substantially
substantially monochromatic
ultimately
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absorbed
accomplish
average
based
cooling
crystals
deexcite
dimensions
emitting
endothermically
energies
energy
energy level
energy levels
excitations
exciting
exciting radiation
exit
fibers
fluorescence
fluorescent
fluorescent refrigeration
glasses
initially
levels
material
material utilized
mirrored
monochromatic
monochromatic radiation
optical
optical fiber
optical fibers
optical path
pathlength
populated
provide
pumping
quantum
radiant
radiant energy
radiation
radiative
radiatively
redistributed
refrigeration
requirement
selective
selective radiative
significantly
strongly
substantially
substantially monochromatic
ultimately
utilized