ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)


For citation:

Andreev A. В., Sheetlin S. L. Superradiance of two-component spatial inhomogeneous media. Izvestiya VUZ. Applied Nonlinear Dynamics, 1997, vol. 5, iss. 2, pp. 35-47. DOI: 10.18500/0869-6632-1997-5-2-35-47

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Language: 
Russian
Article type: 
Article
UDC: 
535.3

Superradiance of two-component spatial inhomogeneous media

Autors: 
Sheetlin Sergei Leonidovich, Lomonosov Moscow State University
Abstract: 

The two—component superradiative medium consists of two species of atoms with the different dipole moments of the quasi-resonant transitions. The atoms with the smaller dipole moment are initially in the excited state, while е atoms of the second type are initially in the ground state. In the initial stage of the superradiance dynamics the first component is amplifying one, the second component is resonantly absorbing. By varying the concentration of the resonantly absorbing atoms it is possible to increase the intensity of superradiance in the few order of magnitude with respect to the monocomponent medium of the amplifying atoms alone. Here we show that the variation in the distribution of the component densities enables us the additional possibilities in the control of the superradiance pulse parameters. The additional increase in the order of magnitude for the peak pulse intensity is obtained at the optimal distribution. The nature of such variation in the pulse profile and its intensity is due to the opportunity for the effective spatial mode selection in the spatial inhomogeneous media. We discuss the algorithms of е numerical solution and show that the enhanced accuracy methods can be developed in this case.

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Acknowledgments: 
The work was carried out with partial financial support from the Competition Center for Fundamental Natural Sciences of the State Education of the Russian Federation (project code 95-0-5.5-177).
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Received: 
25.12.1996
Accepted: 
25.03.1997
Published: 
17.07.1997