dorsal/arxiv
View SchemaContinuous transfer and laser guiding between two cold atom traps
| Authors | Emiliya Dimova, Olivier Morizot, Guillaume Stern, Carlos L. Garrido Alzar, Andrea Fioretti, Vincent Lorent, Daniel Comparat, Hélène Perrin, Pierre Pillet |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0609208 |
| URL | https://arxiv.org/abs/quant-ph/0609208 |
| DOI | 10.1140/epjd/e2007-00022-0 |
| Journal | European physical Journal D 42 (2007) 299-308 |
Abstract
We have demonstrated and modeled a simple and efficient method to transfer atoms from a first Magneto-Optical Trap (MOT) to a second one. Two independent setups, with cesium and rubidium atoms respectively, have shown that a high power and slightly diverging laser beam optimizes the transfer between the two traps when its frequency is red-detuned from the atomic transition. This pushing laser extracts a continuous beam of slow and cold atoms out of the first MOT and also provides a guiding to the second one through the dipolar force. In order to optimize the transfer efficiency, the dependence of the atomic flux on the pushing laser parameters (power, detuning, divergence and waist) is investigated. The atomic flux is found to be proportional to the first MOT loading rate. Experimentally, the transfer efficiency reaches 70%, corresponding to a transfer rate up to 2.7x10^8 atoms/s with a final velocity of 5.5 m/s. We present a simple analysis of the atomic motion inside the pushing-guiding laser, in good agreement with the experimental data.
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"abstract": "We have demonstrated and modeled a simple and efficient method to transfer\natoms from a first Magneto-Optical Trap (MOT) to a second one. Two independent\nsetups, with cesium and rubidium atoms respectively, have shown that a high\npower and slightly diverging laser beam optimizes the transfer between the two\ntraps when its frequency is red-detuned from the atomic transition. This\npushing laser extracts a continuous beam of slow and cold atoms out of the\nfirst MOT and also provides a guiding to the second one through the dipolar\nforce. In order to optimize the transfer efficiency, the dependence of the\natomic flux on the pushing laser parameters (power, detuning, divergence and\nwaist) is investigated. The atomic flux is found to be proportional to the\nfirst MOT loading rate. Experimentally, the transfer efficiency reaches 70%,\ncorresponding to a transfer rate up to 2.7x10^8 atoms/s with a final velocity\nof 5.5 m/s. We present a simple analysis of the atomic motion inside the\npushing-guiding laser, in good agreement with the experimental data.",
"arxiv_id": "quant-ph/0609208",
"authors": [
"Emiliya Dimova",
"Olivier Morizot",
"Guillaume Stern",
"Carlos L. Garrido Alzar",
"Andrea Fioretti",
"Vincent Lorent",
"Daniel Comparat",
"H\u00e9l\u00e8ne Perrin",
"Pierre Pillet"
],
"categories": [
"quant-ph"
],
"doi": "10.1140/epjd/e2007-00022-0",
"journal_ref": "European physical Journal D 42 (2007) 299-308",
"title": "Continuous transfer and laser guiding between two cold atom traps",
"url": "https://arxiv.org/abs/quant-ph/0609208"
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