dorsal/arxiv
View SchemaOptical Manipulation of Long-range Interactions at the 3s+3p Asymptote of Na$_2$
| Authors | Chr. Samuelis, St. Falke, T. Laue, P. Pellegrini, O. Dulieu, H. Knöckel, E. Tiemann |
|---|---|
| Categories | |
| ArXiv ID | physics/0309024 |
| URL | https://arxiv.org/abs/physics/0309024 |
| DOI | 10.1140/epjd/e2003-00294-2 |
| Journal | Eur. Phys. J. D 26 3 (2003) 307-318 |
Abstract
We investigate the influence of a laser field, which is near-resonant to the atomic sodium 3$^2$P$_{1/2}$ $\to$ 3$^2$D$_{3/2}$ transition, on the last bound levels of the A$^1\Sigma^+_u$ state in Na$_2$. In a molecular beam experiment level shifts up to $\approx$ 100 MHz and light induced line broadenings were observed using an optical double resonance excitation scheme. Moreover, the coupling laser can reduce the number of bound levels of the A state by one or more units, which effectively means that in the picture of a collision of a 3$^2$S$_{1/2}$ and a 3$^2$P$_{1/2}$-atom the scattering phase is altered by more than $\pi$. The observed effects are interpreted as light induced couplings of the A$^1\Sigma^+_u$ state, which correlates to the 3s$_{1/2}$+3p$_{1/2}$ asymptote, to the $4^1\Sigma^+_g$ and $2^1\Pi_g$ states at the 3s$_{1/2}$+3d$_{3/2}$ asymptote. We performed multi-channel calculations, applying the mapped Fourier grid method, which reproduce our experimentally observed level shifts well.
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"abstract": "We investigate the influence of a laser field, which is near-resonant to the\natomic sodium 3$^2$P$_{1/2}$ $\\to$ 3$^2$D$_{3/2}$ transition, on the last bound\nlevels of the A$^1\\Sigma^+_u$ state in Na$_2$. In a molecular beam experiment\nlevel shifts up to $\\approx$ 100 MHz and light induced line broadenings were\nobserved using an optical double resonance excitation scheme. Moreover, the\ncoupling laser can reduce the number of bound levels of the A state by one or\nmore units, which effectively means that in the picture of a collision of a\n3$^2$S$_{1/2}$ and a 3$^2$P$_{1/2}$-atom the scattering phase is altered by\nmore than $\\pi$. The observed effects are interpreted as light induced\ncouplings of the A$^1\\Sigma^+_u$ state, which correlates to the\n3s$_{1/2}$+3p$_{1/2}$ asymptote, to the $4^1\\Sigma^+_g$ and $2^1\\Pi_g$ states\nat the 3s$_{1/2}$+3d$_{3/2}$ asymptote. We performed multi-channel\ncalculations, applying the mapped Fourier grid method, which reproduce our\nexperimentally observed level shifts well.",
"arxiv_id": "physics/0309024",
"authors": [
"Chr. Samuelis",
"St. Falke",
"T. Laue",
"P. Pellegrini",
"O. Dulieu",
"H. Kn\u00f6ckel",
"E. Tiemann"
],
"categories": [
"physics.atm-clus",
"physics.atom-ph"
],
"doi": "10.1140/epjd/e2003-00294-2",
"journal_ref": "Eur. Phys. J. D 26 3 (2003) 307-318",
"title": "Optical Manipulation of Long-range Interactions at the 3s+3p Asymptote of Na$_2$",
"url": "https://arxiv.org/abs/physics/0309024"
},
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