DISCLAIMER: This article is being kept online for historical purposes. Though accurate at last review, it is no longer being updated. The page may contain broken links or outdated information.
Laser cooling of solids
Epstein, Richard I. Santa Fe, New Mexico.
Sheik-Bahae, Mansoor Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico.
- Cooling with light
- Cooling with rare-earth-doped solids
- Maximizing the cooling effect
- Related Primary Literature
- Additional Reading
The term “laser cooling” most often is associated with cooling dilute gases of atoms or ions to extremely low temperatures by employing the Doppler effect to reduce their thermal translational energy. This area of science has progressed immensely. However, it is not widely know that in 1929, some 46 years before Doppler cooling of atoms was even contemplated, the physicist Peter Pringsheim suggested the possibility of cooling solids by optical means. In the solid phase, atoms do not possess relative translational motion; their thermal energy is largely contained in the vibrational modes of the lattice. Laser cooling of solids (or optical refrigeration) is similar to atom cooling: Light quanta in the red tail of the absorption spectrum are absorbed from a monochromatic source followed by spontaneous emission of more energetic (blue-shifted) photons, a process known as fluorescence up-conversion. In the case of solids, the extra energy is extracted from lattice phonons, the quanta of vibrational energy in which heat is contained. The removal of these phonons cools the solid.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 45 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information