Title :
Laser cooling of atoms by collisional redistribution of fluorescence
Author :
Vogl, U. ; Weitz, M.
Author_Institution :
Inst. fur Angewandte Phys., Bonn, Germany
Abstract :
This study experimentally demonstrates laser cooling of rubidium atoms subjected to 500 bar of buffer gas pressure based on the collisional redistribution of fluorescence. The frequent collisions in the ultradense gas transiently shift a far red detuned laser beam into resonance, while spontaneous decay occurs close to the unperturbed atomic resonance frequency. In a proof of principle experiment, a relative cooling by 33 K is observed.
Keywords :
atom-photon collisions; fluorescence; laser cooling; resonant states; rubidium; Rb; atomic resonance frequency; buffer gas pressure; collisional fluorescence redistribution; far red detuned laser beam; laser cooling; pressure 500 bar; rubidium atoms; spontaneous decay; ultradense gas; Atom lasers; Atom optics; Atomic beams; Atomic measurements; Cooling; Fluorescence; Gas lasers; Laser beams; Optical buffering; Temperature distribution;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5192356
