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| Format: | Artículo científico |
| Language: | en |
| Published: |
Sociedad Mexicana de Física A.C.
2004
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| Online Access: | https://www.redalyc.org/articulo.oa?id=57062804 |
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Table of Contents:
- An echo of an exciting light pulse in quantum wells I.G. Lang L.I. Korovin D.A. Contreras Solorio S.T. Pavlov Física, Astronomía y Matemáticas Quantum wells light absorption and transmission It is shown that non-sinusoidal oscillations appear in transmitted, reflected and absorbed light fluxes when light pulses irradiate a semiconductor quantum well (QW) containing a large number of equidistant energy levels of electronic excitations. The oscillation amplitude is comparable to the flux values for short pulses with the duration y1-1 = h D/ E. damped echo of the exciting pulse appears in the time intervals 2πh / DE for very short light pulses γ¡-1<< h/DE. Symmetric and asymmetric pulses with a sharp front are considered. Our theory is applicable to narrow QWs in a quantizing magnetic field when the equidistant energy levels correspond to the electron-hole pairs with different Landau quantum numbers. 2004 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57062804 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.Re4 Vol.50