dorsal/arxiv
View SchemaBand Population Measurements in a Purely Optical Dark Lattice
| Authors | Frank Sander, Tilman Esslinger, Theodor W. Hansch, Herwig Stecher, Helmut Ritsch |
|---|---|
| Categories | |
| ArXiv ID | physics/9611019 |
| URL | https://arxiv.org/abs/physics/9611019 |
Abstract
We create a dark optical lattice structure using a blue detuned laser field coupling an atomic ground state of total angular momentum F simultaneously to two excited states with angular momenta F and F-1, or F and F+1. The atoms are trapped at locations of purely circular polarization. The cooling process efficiently accumulates almost half of the atomic population in the lowest energy band which is only weakly coupled to the light field. The populations of the two lowest energy bands reaches 70%. Kinetic energies on the order of the recoil energy are obtained by adiabatically reducing the optical potential. The band populations are directly mapped on free particle momentum intervals by this adiabatic release. In an experiment with subrecoil momentum resolution we measure the band populations and find good absolute agreement with the theoretically calculated steady state band populations.
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"date_created": "2026-03-02T18:01:18.556000Z",
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"abstract": "We create a dark optical lattice structure using a blue detuned laser field\ncoupling an atomic ground state of total angular momentum F simultaneously to\ntwo excited states with angular momenta F and F-1, or F and F+1. The atoms are\ntrapped at locations of purely circular polarization. The cooling process\nefficiently accumulates almost half of the atomic population in the lowest\nenergy band which is only weakly coupled to the light field. The populations of\nthe two lowest energy bands reaches 70%. Kinetic energies on the order of the\nrecoil energy are obtained by adiabatically reducing the optical potential. The\nband populations are directly mapped on free particle momentum intervals by\nthis adiabatic release. In an experiment with subrecoil momentum resolution we\nmeasure the band populations and find good absolute agreement with the\ntheoretically calculated steady state band populations.",
"arxiv_id": "physics/9611019",
"authors": [
"Frank Sander",
"Tilman Esslinger",
"Theodor W. Hansch",
"Herwig Stecher",
"Helmut Ritsch"
],
"categories": [
"physics.atom-ph"
],
"title": "Band Population Measurements in a Purely Optical Dark Lattice",
"url": "https://arxiv.org/abs/physics/9611019"
},
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