Dark-hollow-beam cooling of atoms in a gravito-optical trap

Author

Jianping Yin ; Yifu Zhu ; Yuzhu Wang ; Wonho Jhe

Author_Institution

Dept. of Phys., Florida Int. Univ., Miami, FL, USA

fYear

1998

fDate

8-8 May 1998

Firstpage

233

Lastpage

234

Abstract

Summary form only given.We present a novel gravito-optical trap (GOT) consisting of a dark hollow-divergent laser beam (DHB) either from a collimated and focused doughnut beam or from the output beam of the LP/sub 01/ mode in a hollow optical fiber. The cold atoms are loaded into the DHB from a magneto-optical trap (MOT). As the atoms bounce in the DHB, they experience Sisyphus cooling and geometrical cooling induced by the blue detuned DHB and a very weak repumping beam propagating downward into the DHB. The coupling of the three-level atom and the DHB forms dressed states.

Keywords

laser beam effects; laser cooling; optical collimators; optical fibres; optical focusing; radiation pressure; rubidium; LP/sub 01/ mode; Rb; Sisyphus cooling; blue detuned DHB; cold atoms; dark hollow-divergent laser beam; dark-hollow-beam cooling; dressed states; focused doughnut beam; geometrical cooling; gravito-optical trap; hollow optical fiber; magneto-optical trap; optical collimation; output beam; three-level atom; very weak repumping beam; Atom optics; Atomic beams; Cooling; Heating; Kinetic energy; Laser beams; Magnetic fields; Optical polarization; Optical reflection; Optical surface waves;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IQEC.1998.680490

Filename

680490