dorsal/arxiv
View SchemaDoppler cooling and trapping on forbidden transitions
| Authors | T. Binnewies, G. Wilpers, U. Sterr, F. Riehle, J. Helmcke, T. E. Mehlstäubler, E. M. Rasel, W. Ertmer |
|---|---|
| Categories | |
| ArXiv ID | physics/0105069 |
| URL | https://arxiv.org/abs/physics/0105069 |
| DOI | 10.1103/PhysRevLett.87.123002 |
| Journal | Phys. Rev. Lett. 87, 123002 (2001) |
Abstract
Ultracold atoms at temperatures close to the recoil limit have been achieved by extending Doppler cooling to forbidden transitions. A cloud of ^40Ca atoms has been cooled and trapped to a temperature as low as 6 \mu K by operating a magneto-optical trap on the spin-forbidden intercombination transition. Quenching the long-lived excited state with an additional laser enhanced the scattering rate by a factor of 15, while a high selectivity in velocity was preserved. With this method more than 10% of pre-cooled atoms from a standard magneto-optical trap have been transferred to the ultracold trap. Monte-Carlo simulations of the cooling process are in good agreement with the experiments.
{
"annotation_id": "f1348584-861a-4d66-9d12-a583fcebf226",
"date_created": "2026-03-02T18:00:36.281000Z",
"date_modified": "2026-03-02T18:00:36.281000Z",
"file_hash": "57735d37076aea2f308c3712eac2ae93ed2a050c0a08058b030b509dc9f1fb61",
"private": false,
"record": {
"abstract": "Ultracold atoms at temperatures close to the recoil limit have been achieved\nby extending Doppler cooling to forbidden transitions. A cloud of ^40Ca atoms\nhas been cooled and trapped to a temperature as low as 6 \\mu K by operating a\nmagneto-optical trap on the spin-forbidden intercombination transition.\nQuenching the long-lived excited state with an additional laser enhanced the\nscattering rate by a factor of 15, while a high selectivity in velocity was\npreserved. With this method more than 10% of pre-cooled atoms from a standard\nmagneto-optical trap have been transferred to the ultracold trap. Monte-Carlo\nsimulations of the cooling process are in good agreement with the experiments.",
"arxiv_id": "physics/0105069",
"authors": [
"T. Binnewies",
"G. Wilpers",
"U. Sterr",
"F. Riehle",
"J. Helmcke",
"T. E. Mehlst\u00e4ubler",
"E. M. Rasel",
"W. Ertmer"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevLett.87.123002",
"journal_ref": "Phys. Rev. Lett. 87, 123002 (2001)",
"title": "Doppler cooling and trapping on forbidden transitions",
"url": "https://arxiv.org/abs/physics/0105069"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "517d2b56-ae9f-40e2-92af-bd046daa006f",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}