Journal ArticleDOI
Band-Edge Electroabsorption in Quantum Well Structures: The Quantum-Confined Stark Effect
David A. B. Miller,Daniel S. Chemla,T. C. Damen,Arthur C. Gossard,W. Wiegmann,Thomas H. Wood,Charles A. Burrus +6 more
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In this article, the authors present theory and extended experimental results for the large shift in optical absorption in GaAs-AlGaAs quantum well structures with electric field perpendicular to the layers.Abstract:
We present theory and extended experimental results for the large shift in optical absorption in GaAs-AlGaAs quantum well structures with electric field perpendicular to the layers. In contrast to the Stark effect on atoms or on excitons in bulk semiconductors, the exciton resonances remain resolved even for shifts much larger than the zero-field binding energy and fields g 50 times the classical ionization field. The model explains these results as a consequence of the quantum confinement of carriers.read more
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Journal ArticleDOI
Structural characterization of multi-quantum wells in electroabsorption-modulated lasers by using synchrotron radiation micrometer-beams.
Lorenzo Mino,Diego Gianolio,Giovanni Agostini,Andrea Piovano,M. Truccato,Angelo Agostino,Stefano Cagliero,Gema Martínez-Criado,S. Codato,Carlo Lamberti +9 more
TL;DR: Micrometer-resolved X-ray (m-X-ray) beam available at third generation synchrotron radiation sources allowed us to directly measure the determinant structural parameters of MQW EML structures such as well and barrier widths and mismatches with a 2 mm spatial resolution.
Journal ArticleDOI
Role of quantum-confined stark effect on bias dependent photoluminescence of N-polar GaN/InGaN multi-quantum disk amber light emitting diodes
Malleswararao Tangi,Pawan Mishra,Bilal Janjua,Aditya Prabaswara,Chao Zhao,Davide Priante,Jung-Wook Min,Tien Khee Ng,Boon S. Ooi +8 more
TL;DR: In this article, the impact of quantum-confined stark effect (QCSE) on bias dependent micro-photoluminescence emission of the quantum disk (Q-disk) based nanowires light emitting diodes (NWs-LED) exhibiting the amber colored emission was studied.
Journal ArticleDOI
Growth and structural properties of ZnO films on (10−10) m-plane sapphire substrates by plasma-assisted molecular beam epitaxy
Jung-Hyun Kim,Seok Kyu Han,Sun Ig Hong,Soon-Ku Hong,Jae Wook Lee,Jeong Yong Lee,Jung-Hoon Song,Jinsub Park,Takafumi Yao +8 more
TL;DR: Growth and structural properties of ZnO films on (10−10) m-plane sapphire substrates by plasma-assisted molecular beam epitaxy were studied in this paper.
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The effect of electron interactions on the universal properties of systems with optimized off-resonant intrinsic hyperpolarizability
David S. Watkins,Mark G. Kuzyk +1 more
TL;DR: The focus of the present studies is the intrinsic hyperpolarizability, which is a scale-invariant quantity that removes the effects of simple scaling, thus being the relevant quantity for comparing molecules of varying sizes.