Keisuke Kojima
TitleCited byYear
Optical injection induced polarization bistability in vertical‐cavity surface‐emitting lasers
ZG Pan, S Jiang, M Dagenais, RA Morgan, K Kojima, MT Asom, ...
Applied physics letters 63 (22), 2999-3001, 1993
2841993
Transverse mode control of vertical-cavity top-surface-emitting lasers
RA Morgan, GD Guth, MW Focht, MT Asom, K Kojima, LE Rogers, ...
IEEE Photonics Technology Letters 5 (4), 374-377, 1993
1741993
Top‐surface emitting lasers with 1.9 V threshold voltage and the effect of spatial hole burning on their transverse mode operation and efficiencies
D Vakhshoori, JD Wynn, GJ Zydzik, RE Leibenguth, MT Asom, K Kojima, ...
Applied physics letters 62 (13), 1448-1450, 1993
1471993
High‐frequency polarization self‐modulation in vertical‐cavity surface‐emitting lasers
S Jiang, Z Pan, M Dagenais, RA Morgan, K Kojima
Applied physics letters 63 (26), 3545-3547, 1993
1291993
High-dimensional modulation for coherent optical communications systems
DS Millar, T Koike-Akino, S÷ Arık, K Kojima, K Parsons, T Yoshida, ...
Optics express 22 (7), 8798-8812, 2014
962014
High‐power coherently coupled 8◊ 8 vertical cavity surface emitting laser array
RA Morgan, K Kojima, T Mullally, GD Guth, MW Focht, RE Leibenguth, ...
Applied physics letters 61 (10), 1160-1162, 1992
941992
Analysis of the spectral linewidth of distributed feedback laser diodes
K Kojima, K Kyuma, T Nakayama
Journal of lightwave technology 3 (5), 1048-1055, 1985
861985
Analysis of the spectral linewidth of distributed feedback laser diodes
K Kojima, K Kyuma, T Nakayama
Conference on Optical Fiber Communication (OFC), 136-137, 1985
861985
Influence of external optical feedback on threshold and spectral characteristics of vertical-cavity surface-emitting lasers
S Jiang, Z Pan, M Dagenais, RA Morgan, K Kojima
IEEE photonics technology letters 6 (1), 34-36, 1994
811994
Light emitting diode, method of manufacturing light emitting diode, light emitting diode backlight, light emitting diode illuminating device, light emitting diode display, and†…
K Tomoda, J Suzuki, M Doi, K Kojima
US Patent 7,589,355, 2009
772009
Continuous wave operation of a surface‐emitting AlGaAs/GaAs multiquantum well distributed Bragg reflector laser
K Kojima, S Noda, K Mitsunaga, K Kyuma, K Hamanaka
Applied physics letters 50 (24), 1705-1707, 1987
701987
Scheme to handle radio link control service data units upon reception of a radio link control reset or reset acknowledge protocol data unit in a wireless communication system
F Wu
US Patent App. 10/320,486, 2003
602003
Calculation of two‐dimensional quantum‐confined structures using the finite element method
K Kojima, K Mitsunaga, K Kyuma
Applied physics letters 55 (9), 882-884, 1989
561989
Calculation of two‐dimensional quantum‐confined structure using the finite element method
K Kojima, K Kyuma
7th International Workshop on Future Electron Devices, 193-194, 1989
561989
1.5 μm phase adjusted active distributed reflector laser for complete dynamic single-mode operation
F Koyama, Y Suematsu, K Kojima, K Furuya
Electronics Letters 20 (10), 391-393, 1984
551984
Design of a 1 Tb/s superchannel coherent receiver
DS Millar, R Maher, D Lavery, T Koike-Akino, M Pajovic, A Alvarado, ...
Journal of Lightwave Technology 34 (6), 1453-1463, 2016
542016
Reduction of p-doped mirror electrical resistance of GaAs/AlGaAs vertical-cavity surface-emitting lasers by delta doping
K Kojima, RA Morgan, T Mullaly, GD Guth, MW Focht, RE Leibenguth, ...
Electronics Letters 29 (20), 1771-1772, 1993
461993
AlGaAs/GaAs pnpn differential optical switch operable with 400 fJ optical input energy
K Hara, K Kojima, K Mitsunaga, K Kyuma
Applied physics letters 57 (11), 1075-1077, 1990
391990
cw surface‐emitting grating‐coupled GaAs/AlGaAs distributed feedback laser with very narrow beam divergence
K Mitsunaga, M Kameya, K Kojima, S Noda, K Kyuma, K Hamanaka, ...
Applied physics letters 50 (25), 1788-1790, 1987
391987
Edge‐and surface‐emitting distributed Bragg reflector laser with multiquantum well active/passive waveguides
K Kojima, S Noda, K Mitsunaga, K Kyuma, K Hamanaka, T Nakayama
Applied physics letters 50 (5), 227-229, 1987
381987
The system can't perform the operation now. Try again later.
Articles 1–20