Nonlinear dynamics of atoms in a crossed optical dipole trap

  1. González-Férez, R. 23
  2. Iñarrea, M. 1
  3. Salas, J.P. 1
  4. Schmelcher, P. 2
  1. 1 Universidad de La Rioja

    Universidad de La Rioja

    Logroño, España

    GRID grid.119021.a

  2. 2 University of Hamburg

    University of Hamburg

    Hamburgo, Alemania

    GRID grid.9026.d

  3. 3 Universidad de Granada

    Universidad de Granada

    Granada, España

    GRID grid.4489.1

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

ISSN: 1539-3755

Year of publication: 2014

Volume: 90

Issue: 6

Type: Article

Export: RIS
DOI: 10.1103/PhysRevE.90.062919 SCOPUS: 2-s2.0-84920120998 WoS: 000347207000019
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We explore the classical dynamics of atoms in an optical dipole trap formed by two identical Gaussian beams propagating in perpendicular directions. The phase space is a mixture of regular and chaotic orbits, the latter becoming dominant as the energy of the atoms increases. The trapping capabilities of these perpendicular Gaussian beams are investigated by considering an atomic ensemble in free motion. After a sudden turn on of the dipole trap, a certain fraction of atoms in the ensemble remains trapped. The majority of these trapped atoms has energies larger than the escape channels, which can be explained by the existence of regular and chaotic orbits with very long escape times.