All-optical realization of an atom laser |
| |
Authors: | Cennini Giovanni Ritt Gunnar Geckeler Carsten Weitz Martin |
| |
Institution: | Physikalisches Institut der Universit?t Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, Germany. |
| |
Abstract: | We demonstrate an atom laser using all-optical techniques. A Bose-Einstein condensate of rubidium atoms is created by direct evaporative cooling in a quasistatic dipole trap realized with a single, tightly focused CO2-laser beam. An applied magnetic field gradient allows the formation of the condensate in a field-insensitive m(F)=0 spin projection only, which suppresses fluctuations of the chemical potential from stray magnetic fields. A collimated and monoenergetic beam of atoms is extracted from the Bose-Einstein condensate by continuously lowering the dipole trapping potential in a controlled way to form a novel type of atom laser. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|