Title :
Laser cooling of a solid by 21 K starting from room temperature
Author :
Gosnell, T.R. ; Luo, Xiaohua ; Eisaman, Matthew D.
Author_Institution :
Condensed Matter & Thermal Phys. Group, Los Alamos Nat. Lab., NM, USA
Abstract :
Summary form only given.We demonstrate the laser cooling of an impurity-doped insulator by 0.3 K below room temperature. The cooling effect takes advantage of anti-Stokes photoluminescence of laser-excited Yb/sup 3+/ impurities and relies on the near-unit fluorescence quantum efficiency for this ion in a highly purified ZrF/sub 4/-BaF/sub 2/-LaF/sub 3/-ALF/sub 3/-NaF-PbF/sub 2/ (ZBLANP) glass host.
Keywords :
impurity absorption spectra; infrared spectra; laser cooling; optical glass; photoluminescence; quantum optics; ytterbium; ZBLANP:Yb; ZrF4-BaF2-LaF3-AlF3-NaF-PbF2:Yb; anti-Stokes photoluminescence; cooling effect; highly purified ZBLANP glass host; highly purified ZrF/sub 4/-BaF/sub 2/-LaF/sub 3/-ALF/sub 3/-NaF-PbF/sub 2/ glass host; impurity-doped insulator; laser cooling; laser-excited Yb/sup 3+/ impurities; near-unit fluorescence quantum efficiency; room temperature; Cooling; Fluorescence; Laser theory; Lattices; Probes; Pump lasers; Resonance; Solid lasers; Temperature; Wavelength measurement;
Conference_Titel :
Quantum Electronics Conference, 1998. IQEC 98. Technical Digest. Summaries of papers presented at the International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-541-2
DOI :
10.1109/IQEC.1998.680467
