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US 2023/0178448 A1Published application
Optically-induced cooling
AssigneeThe Regents of the University of Michigan
InventorsLaura B. Andre, Long Cheng, Stephen C. Rand
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Abstract
An illumination source is configured to illuminate a medium with light at a wavelength selected based on an emission band of a selected absorption band of the medium. The selected absorption and emission bands being associated with an electric-dipole-allowed transition of the medium. Upon illumination by the light the medium is cooled.
Claims20
A method includes:
- cooling a medium including a mass characterized by a selected absorption band of one or more electric-dipole-allowed transitions, the selected absorption band having a corresponding fluorescence spectrum by:
- illuminating the medium with light at a selected wavelength for an emission band of the corresponding fluorescence spectrum, where:
- the selected wavelength is greater than an average fluorescence wavelength of the medium for the corresponding fluorescence spectrum.
A system including:
- a medium including a mass characterized by a selected absorption band of one or more electric-dipole-allowed transitions, the selected absorption band having a corresponding fluorescence spectrum;
- and
- an illumination source configured to illuminate the medium with light at a selected wavelength for an emission band of the corresponding fluorescence spectrum, where:
- the selected wavelength is greater than an average fluorescence wavelength of the medium for the corresponding fluorescence spectrum.
1 more element
A device including:
- an illumination source configured to illuminate a medium with light to effect cooling within the medium;
- and
- control circuitry configured to cause the illumination source to generate the light at a selected wavelength for an emission band of a fluorescence spectrum of a selected absorption band of one or more electric-dipole-allowed transitions of the medium, where the selected wavelength is longer than an average fluorescence wavelength of the medium for the fluorescence spectrum.
Dependencies are inferred from the claim text.