Papers - HASEGAWA Takayuki

Intense emission of terahertz electromagnetic wave from an undoped GaAs/n-type GaAs epitaxial layer structure

H. Takeuchi, J. Yanagisawa, T. Hasegawa, and M. Nakayama  ( Multiple Authorship )

Physica Status Solidi (c)   6 ( 6 ) 1513 - 1516   2009.03

Research paper (international conference proceedings)  English

DOI

Pump-energy dependence of usual and unusual Bloch oscillations in a GaAs/AlAs superlattice

T. Hasegawa, K. Mizoguchi, and M. Nakayama  ( Multiple Authorship )

Physica Status Solidi (c)   6 ( 1 ) 264 - 267   2008.09

Research paper (international conference proceedings)  English

DOI

Enhancement of terahertz electromagnetic wave emission from an undoped GaAs/n-type GaAs epitaxial layer structure

H. Takeuchi, J. Yanagisawa, T. Hasegawa, and M. Nakayama  ( Multiple Authorship )

Applied Physics Letters   93 ( 8 ) 081916   2008.08

Research paper (scientific journal)  English

DOI

Photoluminescence due to exciton-exciton scattering in a GaAs/AlAs multiple quantum well

T. Hirao, T. Hasegawa, and M. Nakayama  ( Multiple Authorship )

Journal of Luminescence   128 ( 5-6 ) 960 - 962   2007.11

Research paper (international conference proceedings)  English

DOI

Excitonic quantum beat at the mini-Brillouin-zone boundary in a GaAs/AlAs superlattice

T. Hasegawa, K. Mizoguchi, and M. Nakayama  ( Multiple Authorship )

Journal of Luminescence   128 ( 5-6 ) 1056 - 1058   2007.11

Research paper (international conference proceedings)  English

DOI

Transformation process from quantum beats of miniband excitons to Bloch oscillations in a GaAs/AlAs superlattice under applied electric fields

T. Hasegawa, K. Mizoguchi, and M. Nakayama  ( Multiple Authorship )

Physical Review B   76 ( 11 ) 115323   2007.09

Research paper (scientific journal)  English

DOI

Photocurrent bistability in a GaAs/ Al_xGa_1-xAs superlattice under resonant-coupling conditions of Wannier-Stark localization states

T. Hasegawa and M. Nakayama  ( Multiple Authorship )

Journal of Applied Physics   101 ( 4 ) 043512   2007.02

Research paper (scientific journal)  English

DOI

Photoluminescence from excitons at the mini-Brillouin-zone boundary in a GaAs/AlAs superlattice

T. Hasegawa and M. Nakayama  ( Multiple Authorship )

Physica Status Solidi (b)   243 ( 14 ) 3825 - 3828   2006.10

Research paper (scientific journal)  English

DOI

Electroreflectance observation of transformation processes of the first and second minibands to Wannier-Stark localization states in a GaAs/AlAs superlattice

T. Hasegawa and M. Nakayama  ( Multiple Authorship )

Japanese Journal of Applied Physics   44 ( 12 ) 8340 - 8344   2005.12

Research paper (scientific journal)  English

DOI

Correlation between PL emission band and growth of oxide layer on surface of silicon nanocrystallites

I. Umezu, M. Koyama, T. Hasegawa, K. Matsumoto, M. Inada, and A. Sugimura  ( Multiple Authorship )

AIP Conference Proceedings   772 ( 1 ) 855 - 856   2005.08

Research paper (international conference proceedings)  English

DOI