Pulsed polarization gradient cooling in an optical dipole trap with a Laguerre-Gaussian laser beam

Y. Torii, N. Shiokawa, T. Hirano, T. Kuga, Y. Shimizu, H. Sasada

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We utilized a blue-detuned Laguerre-Gaussian (doughnut) laser beam to trap cold rubidium atoms by optical dipole force. "Pulsed" polarization gradient cooling was applied to the trapped atoms to suppress the trap loss due to heating caused by random photon scattering of the trapping light. In this trap about 108 atoms were initially captured and the trap lifetime was 1.5 s, which was consistent with losses due to background gas collisions. This trap can readily be applied to atom guiding, compression, and evaporative cooling.

Original languageEnglish
Pages (from-to)239-242
Number of pages4
JournalEuropean Physical Journal D
Volume1
Issue number3
DOIs
Publication statusPublished - 1998 Jan 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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