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Intersubband Transitions in Quantum Wells (Paperback, Softcover reprint of the original 1st ed. 1992)
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Intersubband Transitions in Quantum Wells (Paperback, Softcover reprint of the original 1st ed. 1992)
Series: NATO Science Series B:, 288
Expected to ship within 10 - 15 working days
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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.
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