dorsal/arxiv
View SchemaTheory of four-wave mixing and accompanying dissociation and population transfer controlled with laser-induced continuum structures
| Authors | V. V. Kimberg, A. K. Popov, Thomas F. George |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0302021 |
| URL | https://arxiv.org/abs/quant-ph/0302021 |
| Journal | Recent Research Developments in Optics, vol. 2, Research Signpost, Trivandrum, India, 2002 |
Abstract
A theory is developed and applied to the study of opportunities and specific features of coherent control of four-wave mixing as well as of the accompanying processes in the continuous-wave regime, which involve transitions between bound and free quantum states. Such opportunities become feasible through constructive and destructive interference of quantum pathways. Two coupling schemes of practical importance are investigated. In the first, a ladder energy level scheme, fully-resonant sum-frequency nonlinear-optical generation of short-wavelength radiation driven by several strong fields is investigated. The relaxation processes as well as absorption of the fundamental and generated radiations, which play an important role, are taken into consideration. It is shown that the generation output can be considerably increased through the appropriate adjustment of several laser-induced continuum structures. In the second, a folded scheme, a possible control of two-photon dissociation (Lambda-scheme) using auxiliary laser radiation applied to the adjacent bound-free transition (V-configuration) is investigated. Besides dissociation, the proposed method enables one to control population transfer between two upper discreet levels via the lower-energy dissociation continuum, while direct transition between these states is not allowed. The opportunities of manipulating these processes as well as of four-wave-mixing-based spectroscopy are explored both analytically and through a numerical simulation for Na_2 dimers.
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"abstract": "A theory is developed and applied to the study of opportunities and specific\nfeatures of coherent control of four-wave mixing as well as of the accompanying\nprocesses in the continuous-wave regime, which involve transitions between\nbound and free quantum states. Such opportunities become feasible through\nconstructive and destructive interference of quantum pathways. Two coupling\nschemes of practical importance are investigated. In the first, a ladder energy\nlevel scheme, fully-resonant sum-frequency nonlinear-optical generation of\nshort-wavelength radiation driven by several strong fields is investigated. The\nrelaxation processes as well as absorption of the fundamental and generated\nradiations, which play an important role, are taken into consideration. It is\nshown that the generation output can be considerably increased through the\nappropriate adjustment of several laser-induced continuum structures. In the\nsecond, a folded scheme, a possible control of two-photon dissociation\n(Lambda-scheme) using auxiliary laser radiation applied to the adjacent\nbound-free transition (V-configuration) is investigated. Besides dissociation,\nthe proposed method enables one to control population transfer between two\nupper discreet levels via the lower-energy dissociation continuum, while direct\ntransition between these states is not allowed. The opportunities of\nmanipulating these processes as well as of four-wave-mixing-based spectroscopy\nare explored both analytically and through a numerical simulation for Na_2\ndimers.",
"arxiv_id": "quant-ph/0302021",
"authors": [
"V. V. Kimberg",
"A. K. Popov",
"Thomas F. George"
],
"categories": [
"quant-ph"
],
"journal_ref": "Recent Research Developments in Optics, vol. 2, Research Signpost,\n Trivandrum, India, 2002",
"title": "Theory of four-wave mixing and accompanying dissociation and population transfer controlled with laser-induced continuum structures",
"url": "https://arxiv.org/abs/quant-ph/0302021"
},
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