Height-driven linear polarization of the surface emission from quantum dashes
作者： Anna Musiał , Paweł Podemski , Grzegorz Sęk , Piotr Kaczmarkiewicz , Janusz Andrzejewski
DOI: 10.1088/0268-1242/27/10/105022
关键词: Quantum mechanics 、 Photoluminescence 、 Polarization (waves) 、 Anisotropy 、 Elongation 、 Condensed matter physics 、 Asymmetry 、 Nanostructure 、 Quantum 、 Materials science 、 Linear polarization
摘要: The influence of the nanostructure height on polarization surface emission was systematically investigated for In(Ga)As/InP quantum dashes. Polarization-resolved photoluminescence experiment compared to theoretical considerations based multiband k·p theory and an analytical formula relating anisotropy nano-object geometry derived. Substantial in-plane structure shape asymmetry induces a pronounced degree linear in emission, which depends strongly not only lateral aspect ratio but also height. Additionally, linearly polarized (up 90%) demonstrated columnar dashes by combining elongation with significantly increased
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