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Phys Rev Lett. 2006 Nov 17;97(20):200402. Epub 2006 Nov 13.

Guided quasicontinuous atom laser.

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Laboratoire Charles Fabry de l'Institut d'Optique, CNRS et Université Paris Sud 11, Campus Polytechnique, RD 128, 91127 Palaiseau, France.


We report the first realization of a guided quasicontinuous atom laser by rf outcoupling a Bose-Einstein condensate from a hybrid optomagnetic trap into a horizontal atomic waveguide. This configuration allows us to cancel the acceleration due to gravity and keep the de Broglie wavelength constant at 0.5 microm during 0.1 s of propagation. We also show that our configuration, equivalent to pigtailing an optical fiber to a (photon) semiconductor laser, ensures an intrinsically good transverse mode matching.

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