Enhancement of terahertz electromagnetic wave emission from an undoped GaAs∕ n-type GaAs epitaxial layer structure H Takeuchi, J Yanagisawa, T Hasegawa, M Nakayama
Applied Physics Letters 93 (8), 2008
49 2008 Characteristics of photoluminescence due to exciton-exciton scattering in GaAs/AlAs multiple quantum wells M Nakayama, T Hirao, T Hasegawa
Journal of Applied Physics 105 (12), 2009
14 2009 Photoluminescence properties of exciton–exciton scattering in a GaAs/AlAs multiple quantum well M Nakayama, T Hirao, T Hasegawa
Physica E: Low-dimensional Systems and Nanostructures 42 (10), 2644-2647, 2010
11 2010 Transformation process from quantum beats of miniband excitons to Bloch oscillations in a T Hasegawa, K Mizoguchi, M Nakayama
Physical Review B 76 (11), 115323, 2007
9 2007 Electroreflectance Observation of Transformation Processes of the First and Second Minibands to Wannier–Stark Localization States in a GaAs/AlAs Superlattice T Hasegawa, M Nakayama
Japanese journal of applied physics 44 (12R), 8340, 2005
8 2005 Ultrafast dynamics of coherent optical phonon correlated with the antiferromagnetic transition in a hexagonal YMnO3 epitaxial film T Hasegawa, N Fujimura, M Nakayama
Applied Physics Letters 111 (19), 2017
7 2017 Characteristics of ultrafast optical responses originating from non-equilibrium carrier transport in undoped GaAs/n-type GaAs epitaxial structures T Hasegawa, Y Takagi, H Takeuchi, H Yamada, M Hata, M Nakayama
Journal of Applied Physics 113 (20), 2013
7 2013 Ultrafast optical response originating from carrier-transport processes in undoped GaAs/n-type GaAs epitaxial structures T Hasegawa, Y Takagi, H Takeuchi, H Yamada, M Hata, M Nakayama
Applied Physics Letters 100 (21), 2012
7 2012 Characteristics of terahertz wave emissions under the coexistence of different sub-picosecond transient phenomena in GaAs epitaxial films T Hasegawa, Y Okushima, Y Tanaka
Applied Physics Express 14 (4), 041005, 2021
4 2021 Characteristics of Coherent Optical Phonons in a Hexagonal YMnO3 Thin Film T Hasegawa
Applied Sciences 9 (4), 704, 2019
4 2019 High-sensitivity polarization modulation reflectance spectroscopy of cavity polaritons in a ZnO microcavity T Hasegawa, R Kishimoto, Y Takagi, T Kawase, DG Kim, M Nakayama
Applied Physics Express 7 (3), 032003, 2014
4 2014 Electric field effects on excitonic quantum beats in a single quantum well embedded in a GaAs/AlAs superlattice T Hasegawa, Y Takagi, M Nakayama
Physical Review B 83 (20), 205309, 2011
4 2011 Photoluminescence due to exciton–exciton scattering in a GaAs/AlAs multiple quantum well T Hirao, T Hasegawa, M Nakayama
Journal of luminescence 128 (5-6), 960-962, 2008
4 2008 Excitonic quantum beat at the mini-Brillouin-zone boundary in a GaAs/AlAs superlattice T Hasegawa, K Mizoguchi, M Nakayama
Journal of luminescence 128 (5-6), 1056-1058, 2008
4 2008 Upconversion of photoluminescence due to subband resonances in a GaAs/AlAs multiple quantum well structure T Hasegawa, S Okamoto, M Nakayama
Physica E: Low-dimensional Systems and Nanostructures 42 (10), 2648-2651, 2010
3 2010 Unique characteristics of nonequilibrium carrier transport dynamics in an undoped GaAs/n-type GaAs epitaxial structure T Hasegawa, M Nakayama
Applied Physics Express 9 (7), 071001, 2016
2 2016 Photocurrent bistability in a GaAs∕ AlxGa1− xAs superlattice under resonant-coupling conditions of Wannier-Stark localization states T Hasegawa, M Nakayama
Journal of applied physics 101 (4), 2007
2 2007 Electric field dependence of terahertz wave emission in temperature-controlled GaAs epitaxial films T Hasegawa, M Marui, Y Tanaka
Applied Physics Express 15 (5), 051001, 2022
1 2022 Effects of electric field screening induced by photogenerated carriers on terahertz wave measurement in a GaAs epitaxial structure T Hasegawa, O Kojima
Applied Physics Express 17 (5), 051006, 2024
2024 Quantum beat of heavy-hole and light-hole excitons originating from interband Stark-ladder transitions in a biased GaAs/AlAs superlattice T Hasegawa
Applied Physics Express 16 (2), 021007, 2023
2023 
Masaaki NakayamaOsaka City UniversityEmail verificata su a-phys.eng.osaka-cu.ac.jp
