dorsal/arxiv
View SchemaInterference at quantum transitions: lasing without inversion and resonant four-wave mixing in strong fields at Doppler-broadened transitions
| Authors | A. K. Popov |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0005118 |
| URL | https://arxiv.org/abs/quant-ph/0005118 |
| DOI | 10.1117/12.328240 |
| Journal | Proceedings of SPIE Vol. 3485 (1998) 252-263 |
Abstract
An influence of nonlinear interference processes at quantum transitions under strong resonance electromagnetic fields on absorption, amplification and refractive indices as well as on four-wave mixing processes is investigated. Doppler broadening of the coupled transitions, incoherent excitation, relaxation processes, as well as power saturation processes associated with the coupled levels are taken into account. Both closed (ground state is involved) and open (only excited states are involved) energy level configurations are considered. Common expressions are obtained which allow one to analyze the optical characteristics (including gain without inversion and enhanced refractive index at vanishing absorption) for various V, Lambda and H configurations of interfering transitions by a simple substitution of parameters. Similar expressions for resonant four-wave mixing in Raman configurations are derived too. Crucial role of Doppler broadening is shown. The theory is applied to numerical analysis of some recent and potential experiments.
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"abstract": "An influence of nonlinear interference processes at quantum transitions under\nstrong resonance electromagnetic fields on absorption, amplification and\nrefractive indices as well as on four-wave mixing processes is investigated.\nDoppler broadening of the coupled transitions, incoherent excitation,\nrelaxation processes, as well as power saturation processes associated with the\ncoupled levels are taken into account. Both closed (ground state is involved)\nand open (only excited states are involved) energy level configurations are\nconsidered. Common expressions are obtained which allow one to analyze the\noptical characteristics (including gain without inversion and enhanced\nrefractive index at vanishing absorption) for various V, Lambda and H\nconfigurations of interfering transitions by a simple substitution of\nparameters. Similar expressions for resonant four-wave mixing in Raman\nconfigurations are derived too. Crucial role of Doppler broadening is shown.\nThe theory is applied to numerical analysis of some recent and potential\nexperiments.",
"arxiv_id": "quant-ph/0005118",
"authors": [
"A. K. Popov"
],
"categories": [
"quant-ph",
"physics.atom-ph",
"physics.optics"
],
"doi": "10.1117/12.328240",
"journal_ref": "Proceedings of SPIE Vol. 3485 (1998) 252-263",
"title": "Interference at quantum transitions: lasing without inversion and resonant four-wave mixing in strong fields at Doppler-broadened transitions",
"url": "https://arxiv.org/abs/quant-ph/0005118"
},
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