Nonlinear interaction of an ultrashort light pulse with a thin semiconductor film in the exciton spectral range
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KHADZHI, Peter, GAIVAN, Serghei. Nonlinear interaction of an ultrashort light pulse with a thin semiconductor film in the exciton spectral range. In: Quantum Electronics, 1996, vol. 26, pp. 816-819. ISSN 1063-7818. DOI: https://doi.org/10.1070/QE1996v026n09ABEH000789
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Quantum Electronics
Volumul 26 / 1996 / ISSN 1063-7818

Nonlinear interaction of an ultrashort light pulse with a thin semiconductor film in the exciton spectral range

DOI:https://doi.org/10.1070/QE1996v026n09ABEH000789

Pag. 816-819

Khadzhi Peter, Gaivan Serghei
 
Institute of Applied Physics, Academy of Sciences of Moldova
 
 
Disponibil în IBN: 20 iunie 2024


Rezumat

A study is reported of the influence of saturation of the dipole moment of an exciton transition on transient transmission of an ultrashort laser pulse by a semiconductor film in the exciton spectral range. A threshold is predicted at which the transmission changes from total reflection by a film to total bleaching of the film, as the rate of excitation is increased. An analogue of the McCall - Hahn area theorem is derived for ultrashort pulses interacting with a film. When the nonlinear parameter is large, the dependence of the area of a pulse transmitted by a film on the area of an incident pulse becomes multivalued.

Cuvinte-cheie
exciton, thin films, Laser Pulse