Atom guiding and cooling in a dark hollow laser beam Article

cited authors

  • Yin, J; Zhu, Y; Jhe, W; Wang, Z

fiu authors

abstract

  • We propose and analyze theoretically a scheme for atomic guiding and cooling in a dark hollow laser beam generated from the collimated output beam of a [Formula Presented] mode in a micrometer-sized hollow optical fiber. In the scheme, cold atoms from a magneto-optical trap are loaded into the blue-detuned dark hollow beam, move down in the dark hollow beam, and experience transverse Sisyphus cooling induced by the dark hollow beam and a weak repumping beam. In the longitudinal direction, the guided atoms experience heating from the gravity field and cooling from the upward-propagating dark hollow beam and repumping beam. We estimate the transverse two-dimensional equilibrium temperature, the final longitudinal mean velocity, and the total loss of the guided atoms. Our calculations show that a transverse equilibrium temperature of [Formula Presented] a final longitudinal mean velocity of 0–4.41 m/s, and a guiding efficiency of 65–95 % may be obtained. © 1998 The American Physical Society.

publication date

  • January 1, 1998

Digital Object Identifier (DOI)

start page

  • 509

end page

  • 513

volume

  • 58

issue

  • 1