The paper deals with the detailed theoretical investigation of optical coherent transient processes in a narrow direct gap semiconductor quantum well structure (QWS), duly irradiated by a near band gap resonant ultrashort pulsed laser with moderate excitation intensity. The photoinduced band-to-band
Optical coherent transient effects in a magnetized semiconductor quantum wire
β Scribed by Sharmila Banerjee; Pranay K. Sen
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 242 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0749-6036
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β¦ Synopsis
Effects of an external magnetic field on free induction decay (FID) and the Stark effect in GaAs/GaAlAs quantum wires have been investigated analytically. Our results show that both FID and the Stark effect become enhanced due to the presence of a magnetic field. We have also seen that the magnetic field plays an important role in wider wires while in thinner wires, the geometric confinement dominates over the magnetic effects. The results are found to be in good qualitative agreement with that available in the literature.
π SIMILAR VOLUMES
Using the semiclassical coherent radiation-semiconductor interaction model, optical nutation has been analysed in a GaAs/Al x Ga 1-x As quantum well structure (QWS) assumed to be immersed in a moderately strong magnetic field and irradiated by a not-too-strong near band gap resonant femtosecond puls
A periodic array of \(\delta\) function potentials are used to simulate the potential barriers between quantum wires in the presence or absence of lattice site disiocation. The exact eigenenergies and eigenfunctions are found by employing a numerical diagonalization procedure. Based on these results