FREQUENCY-SPECTRUM OF THE SIGNAL WAVE IN RESONANT 4-WAVE-MIXING INDUCED BY BROAD-BANDWIDTH LASERS
We develop a theory of near-resonant four-wave mixing induced by broad-bandwidth chaotic fields in a medium composed of two-level atoms. By solving the equations of motion for the elements of the atomic density matrix using an appropriate decorrelation approximation, we derive an analytic expression...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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1992
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| _version_ | 1797079014383288320 |
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| author | Meacher, D Smith, P Ewart, P Cooper, J |
| author_facet | Meacher, D Smith, P Ewart, P Cooper, J |
| author_sort | Meacher, D |
| collection | OXFORD |
| description | We develop a theory of near-resonant four-wave mixing induced by broad-bandwidth chaotic fields in a medium composed of two-level atoms. By solving the equations of motion for the elements of the atomic density matrix using an appropriate decorrelation approximation, we derive an analytic expression for the frequency spectrum of the signal wave for the case of the bandwidth of the fluctuations of the pump field exceeding the other relaxation rates in the problem. The probe wave is considered weak and of arbitrary bandwidth. The theory is valid for pump intensities up to and exceeding the bandwidth-dependent saturation value. Finally, we show how the frequency spectrum is modified if account is taken of atomic motion. The theoretical results are of direct relevance to practical experiments involving broad-bandwidth pulsed lasers and employing an atomic vapor as the nonlinear medium. © 1992 The American Physical Society. |
| first_indexed | 2024-03-07T00:39:37Z |
| format | Journal article |
| id | oxford-uuid:82980de7-9065-4238-ba44-a18707c78359 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:39:37Z |
| publishDate | 1992 |
| record_format | dspace |
| spelling | oxford-uuid:82980de7-9065-4238-ba44-a18707c783592022-03-26T21:38:34ZFREQUENCY-SPECTRUM OF THE SIGNAL WAVE IN RESONANT 4-WAVE-MIXING INDUCED BY BROAD-BANDWIDTH LASERSJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:82980de7-9065-4238-ba44-a18707c78359EnglishSymplectic Elements at Oxford1992Meacher, DSmith, PEwart, PCooper, JWe develop a theory of near-resonant four-wave mixing induced by broad-bandwidth chaotic fields in a medium composed of two-level atoms. By solving the equations of motion for the elements of the atomic density matrix using an appropriate decorrelation approximation, we derive an analytic expression for the frequency spectrum of the signal wave for the case of the bandwidth of the fluctuations of the pump field exceeding the other relaxation rates in the problem. The probe wave is considered weak and of arbitrary bandwidth. The theory is valid for pump intensities up to and exceeding the bandwidth-dependent saturation value. Finally, we show how the frequency spectrum is modified if account is taken of atomic motion. The theoretical results are of direct relevance to practical experiments involving broad-bandwidth pulsed lasers and employing an atomic vapor as the nonlinear medium. © 1992 The American Physical Society. |
| spellingShingle | Meacher, D Smith, P Ewart, P Cooper, J FREQUENCY-SPECTRUM OF THE SIGNAL WAVE IN RESONANT 4-WAVE-MIXING INDUCED BY BROAD-BANDWIDTH LASERS |
| title | FREQUENCY-SPECTRUM OF THE SIGNAL WAVE IN RESONANT 4-WAVE-MIXING INDUCED BY BROAD-BANDWIDTH LASERS |
| title_full | FREQUENCY-SPECTRUM OF THE SIGNAL WAVE IN RESONANT 4-WAVE-MIXING INDUCED BY BROAD-BANDWIDTH LASERS |
| title_fullStr | FREQUENCY-SPECTRUM OF THE SIGNAL WAVE IN RESONANT 4-WAVE-MIXING INDUCED BY BROAD-BANDWIDTH LASERS |
| title_full_unstemmed | FREQUENCY-SPECTRUM OF THE SIGNAL WAVE IN RESONANT 4-WAVE-MIXING INDUCED BY BROAD-BANDWIDTH LASERS |
| title_short | FREQUENCY-SPECTRUM OF THE SIGNAL WAVE IN RESONANT 4-WAVE-MIXING INDUCED BY BROAD-BANDWIDTH LASERS |
| title_sort | frequency spectrum of the signal wave in resonant 4 wave mixing induced by broad bandwidth lasers |
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