The Official Site of Hideo Takeuchi, Ph. D.,
The real truth is I probably don't want to be too happy or content. Because ... then what? I actually like the quest, the search. That's the fun. The more lost you are, the more you have to look forward to. What do you know? I’m having a great time, and I don't even know it. ー Ally McBeal, season 1, episode 1 "Pilot", (FOX TV, September 8, 1997).
News
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#. September 17, 2023
Oral presentation at the academic conference, The 48th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2023), in July 2-7, Mount Royal Center, Montreal, Quebec, Canada.
Presentation Number & Date: We-PM2-2-2, September 20, 2023
Simple enhance method of terahertz waves, neodymium magnet GaAs, THz pulse, coherent LO phonon.
#Link to the academic conference site
#. June 24, 2023
Posterl presentation at the academic conference, The 17th International Conference on Phonon Scattering in Condensed Matter, Phonons 2023, in July 2-7, Conservatoire National des Arts et Métiers, France.
Keyword: Coherent longitudinal phonon, InAs, Effects of doping on generation mechnasims.
#Link to the academic conference site
#. May 14, 2023
Posterl presentation at the academic conference, The Condensed Matter and Quantum Materials 2023 (CMQM 2023) in June 28-30, University of Birmingham, Birmingham, United Kingdom..
Presentation Number & Date: to be announced
Keyword: Free induction decay, coherent folded longitudinal acoustic phonon, semiconductor superlattice, nanostructure.
#Link to the academic conference site
#. March 15, 2023
Publication of the paper in IEEE Transactions on Device and Materials Reliability.
"Nondestructive and quantitative evaluation of a GaAs epitaxial layer covered with a silicon nitride insulating thin film after a highly accelerated temperature and humidity stress with the use of photoreflectance spectroscopy"
#Link to the online-journal site (w/ open access option)
#. December 11, 2022
Oral presentation at the academic conference, AVS Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2022) in Dec. 11-15, Waikoloa Beach Marriott Resort & Spa, Big Island Hawaii, USA.
Presentation Number & Date: Presentation @TF-WeE-3, Dec. 14 18:20
Keyword: Optically excited dynamica phenomena in narrow gap semiconductors, photo-Dember effect, highly doping effect, Cohereten LO-phonon-electron-plasmon coupled mode and its generataion process, InSb, Teraherz time-domain spectroscopy (THz-TDS)
#Link to the academic conference site
#. October 15, 2022
Publication of the paper in Optics Continuum (formerly OSA Continuum)
"Decay time extension of terahertz electromagnetic waves emitted from coherent longitudinal optical phonons in GaAs epitaxial layers with the use of fast atom bombardment"
#Link to the online-journal site
#. June 27-30, 2022
Poster presentation at the academic conference, International Conference on Physics Semiconductors 2022 in Sydney, Australia.
"Topics: Terahertz wave from coherent LO phonons, Control of decay time, GaAs epilayers."
#Link to the conference site
Research description
- I. Non-crystalline chalcogenide semiconductors
- II. Coherent phonons: Ultrafast optical pump-probe measurements
- III. Photoreflectance spectroscopy
- IV. Terahertz spectroscopy A: Emission from surge currents of photogenerated carriers
- V. Terahertz spectroscopy B: Emission from coherent longitudinal optical phonons
- VI. Polariscopic analysis for inspection of strains in semiconductor single crystal wafers
- Sub I. Exciton dynamics in semiconductors
- Sub II. Envelope functions in semiconductor suprelattices
Department of Applied Physics, Graduate School of Engineering, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi, Osaka 558-8585, Japan
e-mail address：takeuchi(at_sign)a-phys.eng.osaka-cu.ac.jp
Schedule: Conference Presentations
- #. July 18, 2017
Hideo Takeuchi will make a poster presentation (TuP06) at The 20th International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures (EDISON20) held in Buffalo NY, USA.
Title: Screening effects of photogenerated carriers on terahertz radiation from coherent GaAs-like longitudinal optical phonons in (11n)-oriented GaAs/In0.1Al0.9As strained multiple quantum wells.
