Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Journal of Applied Physics
65 (1989), S. 4377-4381
ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We have theoretically studied the field-dependent optical properties of a step quantum-well structure, which consists of a small well inside a big well. The wave functions of the small and big wells overlap and their eigenenergies have different field dependencies. The transition from a small-well state to a big well state thus gives a large Stark shift at low applied field without degrading the oscillator strength. Another advantage is to allow optical transitions that are forbidden in simple single-well structures. This relaxation of the selection rule makes it possible to provide optical pumping for intersubband lasing. Also, since the step well is asymmetric, many nonlinear properties are expected.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.343276
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