Intersubband Transitions in Quantum Wells

ISBN-13: 9781461364757 / Angielski / Miękka / 2012 / 345 str.

Emmanuel Rosencher; Borge Vinter; Barry F. Levine

Opis

This book contains the lectures delivered at the NATO Advanced Research Workshop on the "Intersubband Transistions in Quantum Wells" held in Cargese, France, between the t 9 h and the 14th of September 1991. The urge for this Workshop was justified by the impressive growth of work dealing with this subject during the last two or three years. Indeed, thanks to recent progresses of epitaxial growth techniques, such as Molecular Beam Epitaxy, it is now possible to realize semiconductor layers ( e.g. GaAs) with thicknesses controlled within one atomic layer, sandwiched between insulating layers (e.g. AlGaAs). When the semiconducting layer is very thin, i.e. less than 15 nm, the energy of the carriers corresponding to their motion perpendicular to these layers is quantized, forming subbands of allowed energies. Because of the low effective masses in these semiconducting materials, the oscillator strengths corresponding to intersubband transitions are extremely large and quantum optical effects become giant in the 5 - 20 range: photoionization, optical nonlinearities, ... Moreover, a great theoretical surprise is that - thanks to the robustness of the effective mass theory - these quantum wells are a real life materialization of our old text book one-dimensional quantum well ideal. Complex physical phenomena may then be investigated on a simple model system.

Spis treści

Detection: Coupling of Radiation into Quantum Well Infrared Detectors by the Use of Reflection Gratings and Waveguide Structures; J.Y. Andersson, L. Lundquist. Fundamental Limits in Quantum Well Intersubband Detection; I. Gravé, A. Yariv. Low-Dimesion Effects: Spectroscopy of Quantum Dot Atoms; D. Heitmann, et al. Photon Scattering and Relaxation Properties of Lower Dimensional Electron Gasses; U. Bockelmann. Nonlinear Optics: Electron Transfer Infrared Modulator; V. Berger et, al. Second Harmonic Generation in Asymmetric AlGaAs Quantum Wells; F.H. Julien. Other Quantum Systems: Intersubband Absorption in the Conduction Band of Si/SiGe Multiple Quantum Wells; H. Hertle, et al. Physics of Intersubband Transitions: Inelastic Light Scattering Study of Intersubband Transitions; G. Abstreiter. 23 addtional articles. Index.