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Marcel Mudrich

Optical dipole trap inside a laser resonator

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  • Marc Eichhorn, Max-Planck-Institut für Kernphysik
  • ,
  • Marcel Mudrich
  • Matthias Weidemüller, Max-Planck-Institut für Kernphysik

We report the first realization, to our knowledge, of an optical dipole trap inside the active resonator of a laser. The concept, which is demonstrated with a CO2 laser (λ = 10.6 μm), combines the advantages of optical power enhancement (up to 1.3-kW peak power) with the intrinsic stability of laser intensity as a result of the feedback of the active laser medium. Two kinds of trapping geometries are presented: a Gaussian trap in a transverse TEM00 mode and a boxlike transverse confinement in a superposition of transverse modes. In addition, longitudinal superlattices are created by two-frequency operation of the laser. Transfer efficiencies of up to 50% from a cesium magneto-optical trap are achieved. Storage times (τ = -0.3 s) are mainly limited by the background gas pressure. Possible sources of additional loss of atoms are discussed.

TidsskriftOptics Letters
Sider (fra-til)1147-1149
Antal sider3
StatusUdgivet - 15 maj 2004
Eksternt udgivetJa

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