Two-photon excitation of asymmetric GaN/AlGaN quantum discs

By using two-photon absorption spectroscopy we have performed time-integrated and time-resolved photolurninescence measurements on several coupled asymmetric GaN quantum discs, with embedded AlGaN barriers. We observe free-carrier screening, with an enhancement due to tunneling between the coupled q...

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Détails bibliographiques
Auteurs principaux: Lee, K, Na, J, Birner, S, Yi, SN, Taylor, R, Park, Y, Park, C, Kang, T
Format: Conference item
Publié: 2007