dorsal/arxiv
View SchemaTheoretical model for ultracold molecule formation via adaptive feedback control
| Authors | Ulrich Poschinger, Wenzel Salzmann, Roland Wester, Matthias Weidemueller, Christiane P. Koch, Ronnie Kosloff |
|---|---|
| Categories | |
| ArXiv ID | physics/0604140 |
| URL | https://arxiv.org/abs/physics/0604140 |
| DOI | 10.1088/0953-4075/39/19/S14 |
| Journal | J. Phys. B 39, 1001 (2006) |
Abstract
We investigate pump-dump photoassociation of ultracold molecules with amplitude- and phase-modulated femtosecond laser pulses. For this purpose a perturbative model for the light-matter interaction is developed and combined with a genetic algorithm for adaptive feedback control of the laser pulse shapes. The model is applied to the formation of 85Rb2 molecules in a magneto-optical trap. We find for optimized pulse shapes an improvement for the formation of ground state molecules by more than a factor of 10 compared to unshaped pulses at the same pump-dump delay time, and by 40% compared to unshaped pulses at the respective optimal pump-dump delay time. Since our model yields directly the spectral amplitudes and phases of the optimized pulses, the results are directly applicable in pulse shaping experiments.
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"abstract": "We investigate pump-dump photoassociation of ultracold molecules with\namplitude- and phase-modulated femtosecond laser pulses. For this purpose a\nperturbative model for the light-matter interaction is developed and combined\nwith a genetic algorithm for adaptive feedback control of the laser pulse\nshapes. The model is applied to the formation of 85Rb2 molecules in a\nmagneto-optical trap. We find for optimized pulse shapes an improvement for the\nformation of ground state molecules by more than a factor of 10 compared to\nunshaped pulses at the same pump-dump delay time, and by 40% compared to\nunshaped pulses at the respective optimal pump-dump delay time. Since our model\nyields directly the spectral amplitudes and phases of the optimized pulses, the\nresults are directly applicable in pulse shaping experiments.",
"arxiv_id": "physics/0604140",
"authors": [
"Ulrich Poschinger",
"Wenzel Salzmann",
"Roland Wester",
"Matthias Weidemueller",
"Christiane P. Koch",
"Ronnie Kosloff"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1088/0953-4075/39/19/S14",
"journal_ref": "J. Phys. B 39, 1001 (2006)",
"title": "Theoretical model for ultracold molecule formation via adaptive feedback control",
"url": "https://arxiv.org/abs/physics/0604140"
},
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