Room temperature circularly polarized lasing in an optically spin injected vertical-cavity surface-emitting laser with (110) GaAs quantum wells S Iba, S Koh, K Ikeda, H Kawaguchi
Applied Physics Letters 98 (8), 2011
128 2011 Ultrahigh room-temperature hole Hall and effective mobility in heterostructures T Irisawa, S Tokumitsu, T Hattori, K Nakagawa, S Koh, Y Shiraki
Applied Physics Letters 81 (5), 847-849, 2002
115 2002 GaAs/Ge/GaAs sublattice reversal epitaxy on GaAs (100) and (111) substrates for nonlinear optical devices Shinji Koh, Takashi Kondo, Ebihara, Minoru, Ishiwada, Tetsuya, Sawada ...
Japanese journal of applied physics 38 (5A), L508, 1999
105 1999 In-plane strain fluctuation in strained-Si/SiGe heterostructures K Sawano, S Koh, Y Shiraki, N Usami, K Nakagawa
Applied physics letters 83 (21), 4339-4341, 2003
84 2003 GaAs/Ge/GaAs sublattice reversal epitaxy and its application to nonlinear optical devices S Koh, T Kondo, Y Shiraki, R Ito
Journal of crystal growth 227, 183-192, 2001
79 2001 Extremely high room-temperature two-dimensional hole gas mobility in p -type modulation-doped heterostructures M Myronov, T Irisawa, OA Mironov, S Koh, Y Shiraki, TE Whall, ...
Applied physics letters 80 (17), 3117-3119, 2002
67 2002 Circularly polarized lasing in a (110)-oriented quantum well vertical-cavity surface-emitting laser under optical spin injection H Fujino, S Koh, S Iba, T Fujimoto, H Kawaguchi
Applied Physics Letters 94 (13), 2009
66 2009 Sublattice reversal in GaAs/Si/GaAs (100) heterostructures by molecular beam epitaxy S Koh, T Kondo, T Ishiwada, C Iwamoto, H Ichinose, H Yaguchi, T Usami, ...
Japanese journal of applied physics 37 (12B), L1493, 1998
59 1998 Hole density dependence of effective mass, mobility and transport time in strained Ge channel modulation-doped heterostructures T Irisawa, M Myronov, OA Mironov, EHC Parker, K Nakagawa, M Murata, ...
Applied Physics Letters 82 (9), 1425-1427, 2003
56 2003 Fabrication of high-quality strain-relaxed thin SiGe layers on ion-implanted Si substrates K Sawano, S Koh, Y Shiraki, Y Ozawa, T Hattori, J Yamanaka, K Suzuki, ...
Applied physics letters 85 (13), 2514-2516, 2004
51 2004 Surface planarization of strain-relaxed SiGe buffer layers by CMP and post cleaning K Sawano, K Kawaguchi, S Koh, Y Hirose, T Hattori, K Nakagawa, ...
Journal of The Electrochemical Society 150 (7), G376, 2003
49 2003 Transformation of the incongruent-melting state to the congruent-melting state via an external electric field for the growth of langasite S Uda, X Huang, S Koh
Journal of crystal growth 281 (2-4), 481-491, 2005
44 2005 Temperature dependence of transport properties of high mobility holes in Ge quantum wells M Myronov, T Irisawa, S Koh, OA Mironov, TE Whall, EH Parker
Journal of Applied Physics 97, 083701, 2005
43 * 2005 Graphene-based optically transparent dipole antenna S Kosuga, R Suga, O Hashimoto, S Koh
Applied Physics Letters 110 (23), 2017
40 2017 The effect of growth atmosphere and Ir contamination on electric properties of La3 Ta0.5 Ga5.5 O14 single crystal grown by the floating zone and Czochralski method H Kimura, S Uda, O Buzanov, X Huang, S Koh
Journal of electroceramics 20, 73-80, 2008
40 2008 Surface smoothing of SiGe strain-relaxed buffer layers by chemical mechanical polishing K Sawano, K Kawaguchi, T Ueno, S Koh, K Nakagawa, Y Shiraki
Materials Science and Engineering: B 89 (1-3), 406-409, 2002
37 2002 Switching of lasing circular polarizations in a (110)-VCSEL K Ikeda, T Fujimoto, H Fujino, T Katayama, S Koh, H Kawaguchi
IEEE Photonics Technology Letters 21 (18), 1350-1352, 2009
36 2009 Enhancement of Strain Relaxation of SiGe Thin Layers by Pre-Ion-Implantation into Si Substrates K Sawano, Y Hirose, Y Ozawa, S Koh, J Yamanaka, K Nakagawa
Japanese Journal of Applied Physics 42, 735-737, 2003
35 2003 Mobility enhancement in strained Si modulation-doped structures by chemical mechanical polishing K Sawano, S Koh, Y Shiraki, Y Hirose, T Hattori, K Nakagawa
Applied physics letters 82 (3), 412-414, 2003
33 2003 Optical properties of strain-balanced SiGe planar microcavities with Ge dots on Si substrates K Kawaguchi, M Morooka, K Konishi, S Koh, Y Shiraki
Applied physics letters 81 (5), 817-819, 2002
30 2002