Laser cooling of solids to cryogenic temperatures (Articolo in rivista)

Type
Label
  • Laser cooling of solids to cryogenic temperatures (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1038/NPHOTON.2009.269 (literal)
Alternative label
  • Seletskiy D.V., Melgaard S.D., Bigotta S., Di Lieto A., Tonelli M. and Sheik-Bahae M. (2010)
    Laser cooling of solids to cryogenic temperatures
    in Nature photonics (Print); Nature Publishing Group, New York (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Seletskiy D.V., Melgaard S.D., Bigotta S., Di Lieto A., Tonelli M. and Sheik-Bahae M. (literal)
Pagina inizio
  • 161 (literal)
Pagina fine
  • 164 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 4 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA 2. Univ Pisa, NEST CNR INFM, Dipartimento Fis, I-56127 Pisa, Italy (literal)
Titolo
  • Laser cooling of solids to cryogenic temperatures (literal)
Abstract
  • Laser radiation has been used to cool matter ranging from dilute gases to micromechanical oscillators. In Doppler cooling of gases, the translational energy of atoms is lowered through interaction with a laser field1,2. Recently, cooling of a high-density gas through collisional redistribution of radiation has been demonstrated3. In laser cooling of solids, heat is removed through the annihilation of lattice vibrations in the process of anti-Stokes fluorescence4-6. Since its initial obser-vation in 1995, research7-15 has led to achieving a temperature of 208 K in ytterbium-doped glass16. In this Letter, we report laser cooling of ytterbium-doped LiYF4 crystal to a temperature of ?155 K starting from ambient, with a cooling power of 90 mW. This is achieved by making use of the Stark manifold resonance in a crystalline host, and demonstrates the lowest temperature achieved to date without the use of cryogens or mechanical refrigeration. Optical refrigeration has entered the cryogenic regime, surpassing the performance of multi-stage Peltier coolers. The process of optical refrigera (literal)
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