O
Osamu Wada
Researcher at Kobe University
Publications - 391
Citations - 6676
Osamu Wada is an academic researcher from Kobe University. The author has contributed to research in topics: Quantum dot & Quantum well. The author has an hindex of 41, co-authored 390 publications receiving 6546 citations. Previous affiliations of Osamu Wada include National Tsing Hua University & Fujitsu.
Papers
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Ultrafast intersubband relaxation (⩽150 fs) in AlGaN/GaN multiple quantum wells
TL;DR: In this paper, the authors verified the ultrafast intersubband relaxation in GaN quantum wells and obtained an ultrashort relaxation time of less than 150 fs at a wavelength of 4.5 μm.
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Femtosecond all-optical devices for ultrafast communication and signal processing
TL;DR: In this paper, the authors review requirements of ultrafast all-optical devices and recent progress in ultrafast light sources and switches based on either novel device principles or ultrafast phenomena in novel materials such as quantum-confined nanostructures.
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Temperature Dependence of GaAs1-xBix Band Gap Studied by Photoreflectance Spectroscopy
TL;DR: In this article, the fundamental band gap of GaAs1-xBix alloys was investigated by analyzing the Franz-Keldysh oscillation in the photoreflectance (PR) spectra.
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Low dark current GaAs metal-semiconductor-metal (MSM) photodiodes using WSi x contacts
M. Ito,Osamu Wada +1 more
TL;DR: In this paper, a metal-semiconductor-metal (MSM) photodiodes using the same undoped GaAs layer that is used as a buffer layer in the epitaxial structure for GaAs field effect transistors (FET's) are presented.
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Detection of a carcinogen, 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP), in cigarette smoke condensate.
TL;DR: A carcinogenic heterocyclic amine, 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP), was measured in condensate of cigarette mainstream smoke by HPLC and was detected in all brands of filter-tipped cigarettes analyzed.