dorsal/arxiv
View SchemaManipulative resonant nonlinear optics: nonlinear interference effects and quantum control of nonlinearity, dispersion, transparency and inversionless amplification in an extended strongly-absorbing inhomogeneously-broadened medium
| Authors | A. K. Popov, S. A. Myslivets, Thomas F. George |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0501001 |
| URL | https://arxiv.org/abs/quant-ph/0501001 |
| DOI | 10.1103/PhysRevA.71.043811 |
| Journal | Physical Review A 71, 043811(13 pages) (2005) |
Abstract
Specific features of nonlinear interference processes at quantum transitions in near- and fully-resonant optically-dense Doppler-broadened medium are studied. The feasibility of overcoming of the fundamental limitation on a velocity-interval of resonantly coupled molecules imposed by the Doppler effect is shown based on quantum coherence. This increases the efficiency of nonlinear-optical processes in atomic and molecular gases that possess the most narrow and strongest resonances. The possibility of all-optical switching of the medium to opaque or, alternatively, to absolutely transparent, or even to strongly-amplifying states is explored, which is controlled by a small variation of two driving radiations. The required intensities of the control fields are shown to be typical for cw lasers. These effects are associated with four-wave mixing accompanied by Stokes gain and by their interference in fully- and near-resonant optically-dense far-from-degenerate double-Lambda medium. Optimum conditions for inversionless amplification of short-wavelength radiation above the oscillation threshold at the expense of the longer-wavelength control fields, as well as for Raman gain of the generated idle infrared radiation, are investigated. The outcomes are illustrated with numerical simulations applied to sodium dimer vapor. Similar schemes can be realized in doped solids and in fiber optics.
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"abstract": "Specific features of nonlinear interference processes at quantum transitions\nin near- and fully-resonant optically-dense Doppler-broadened medium are\nstudied. The feasibility of overcoming of the fundamental limitation on a\nvelocity-interval of resonantly coupled molecules imposed by the Doppler effect\nis shown based on quantum coherence. This increases the efficiency of\nnonlinear-optical processes in atomic and molecular gases that possess the most\nnarrow and strongest resonances. The possibility of all-optical switching of\nthe medium to opaque or, alternatively, to absolutely transparent, or even to\nstrongly-amplifying states is explored, which is controlled by a small\nvariation of two driving radiations. The required intensities of the control\nfields are shown to be typical for cw lasers. These effects are associated with\nfour-wave mixing accompanied by Stokes gain and by their interference in fully-\nand near-resonant optically-dense far-from-degenerate double-Lambda medium.\nOptimum conditions for inversionless amplification of short-wavelength\nradiation above the oscillation threshold at the expense of the\nlonger-wavelength control fields, as well as for Raman gain of the generated\nidle infrared radiation, are investigated. The outcomes are illustrated with\nnumerical simulations applied to sodium dimer vapor. Similar schemes can be\nrealized in doped solids and in fiber optics.",
"arxiv_id": "quant-ph/0501001",
"authors": [
"A. K. Popov",
"S. A. Myslivets",
"Thomas F. George"
],
"categories": [
"quant-ph",
"physics.optics"
],
"doi": "10.1103/PhysRevA.71.043811",
"journal_ref": "Physical Review A 71, 043811(13 pages) (2005)",
"title": "Manipulative resonant nonlinear optics: nonlinear interference effects and quantum control of nonlinearity, dispersion, transparency and inversionless amplification in an extended strongly-absorbing inhomogeneously-broadened medium",
"url": "https://arxiv.org/abs/quant-ph/0501001"
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