| Autor: |
O A Kocharovskaya |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Soviet Journal of Quantum Electronics. 20:14-20 |
| ISSN: |
0049-1748 |
| DOI: |
10.1070/qe1990v020n01abeh004781 |
| Popis: |
An asymmetry of the spectral characteristics of optical transitions influences strongly the nature of a coherent nonlinear interaction between a broad-band three-level absorber and a series of ultrashort pulses. It is predicted that the absorption of the field will be reduced substantially in a three-level medium with asymmetric 1–3, 2–3 transitions. It is shown that the strong asymmetry results in coherent bleaching of the medium even in the absence of a resonance between the low-frequency 1–2 transition and the pulse repetition frequency (also under the action of high-power single ultrashort pulses). There is a range of parameters where a resonant dependence of the absorbed power on the pulse repetition frequency is observed and this dependence is enhanced appreciably by increasing the asymmetry. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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