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Polarization-resolved optical absorption in single V-groove quantum wires
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- Palmgren, Susanna, 1969- (author)
- Ecole Polytechnique Fdrale de Lausanne (EPFL), Laboratory of Physics of Nanostructures, CH-1015 Lausanne, Switzerland
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- Weman, Helge, 1960- (author)
- Ecole Polytechnique Fdrale de Lausanne (EPFL), Laboratory of Physics of Nanostructures, CH-1015 Lausanne, Switzerland
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- Schoenberg, A. (author)
- Ecole Polytechnique Fdrale de Lausanne (EPFL), Laboratory of Physics of Nanostructures, CH-1015 Lausanne, Switzerland
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- (creator_code:org_t)
- AIP Publishing, 2006
- 2006
- English.
- In: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 89, s. 191111-
- Journal article (peer-reviewed)
Abstract
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- Optical transitions associated with all three linear polarization directions were investigated in single GaAs V-groove quantum wires of different wire thicknesses. This was accomplished by combining absorption measurements in V-groove waveguide geometry with surface-excited photoluminescence excitation spectroscopy. The observed transitions were identified with the aid of model calculations. It is shown that excitonic intersubband coupling should be accounted for in order to explain the optical transitions associated with confined light-hole-like states. The results are relevant for the design of efficient quantum wire waveguide modulators and lasers.
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- NATURAL SCIENCES
- NATURVETENSKAP
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- Rudra, A.
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