Toshihiro Kawano

次席研究員(研究院講師)

  • 611 Citations
  • 14 h-Index
1984 …2012
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Research Output 1984 2012

  • 611 Citations
  • 14 h-Index
  • 24 Article
  • 7 Conference contribution
  • 2 Chapter
  • 1 Conference article
2012
1 Citation (Scopus)

Large GaN p-n junction diodes of 3 mm in diameter on free-standing GaN substrates with high breakdown voltage

Nomoto, K., Nakamura, T., Kaneda, N., Kawano, T., Tsuchiya, T. & Mishima, T., 2012, Materials Science Forum. Vol. 717-720. p. 1299-1302 4 p. (Materials Science Forum; vol. 717-720).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

junction diodes
Electric breakdown
p-n junctions
electrical faults
Diodes
2011
69 Citations (Scopus)

Over 3.0 gw/cm2 figure-of-merit gan p-n junction diodes on free-standing gan substrates

Hatakeyama, Y., Nomoto, K., Kaneda, N., Kawano, T., Mishima, T. & Nakamura, T., 2011 Dec, In : IEEE Electron Device Letters. 32, 12, p. 1674-1676 3 p., 6042353.

Research output: Contribution to journalArticle

Diodes
Substrates
Electric breakdown
Electrodes
Leakage currents
2001
19 Citations (Scopus)

Underwater laser welding by 4kW CW YAG laser

Yamashita, Y., Kawano, T. & Mann, K., 2001 Oct, In : Journal of Nuclear Science and Technology. 38, 10, p. 891-895 5 p.

Research output: Contribution to journalArticle

Underwater welding
laser welding
Continuous wave lasers
Laser beam welding
nuclear power plants
1995
5 Citations (Scopus)

Damage in a GaAs surface caused by RF-sputter deposition of SiO2

Mitani, K. & Kawano, T., 1995 Sep, Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes & Review Papers. 9 A ed. JJAP, Vol. 34. p. 4649-4652 4 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

Sputter deposition
Spectroscopic ellipsometry
Transmission electron microscopy
Amorphous semiconductors
Deposition rates
1 Citation (Scopus)

High-quality Zn-diffused InP-related materials fabricated by the open-tube technique

Tsuchiya, T., Taniwatari, T., Haga, T. & Kawano, T., 1995, Conference Proceedings - International Conference on Indium Phosphide and Related Materials. IEEE, p. 664-667 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Semiconductor quantum wells
Photoluminescence
tubes
Defects
Crystals
19 Citations (Scopus)

Ultralow Threshold 1.3-μm InGaAsP–InP Compressive-Strained Multiquantum-Well Monolithic Laser Array for Parallel High-Density Optical Interconnects

Uomi, K., Tsuchiya, T., Komori, M., Oka, A., Kawano, T. & Oishi, A., 1995, In : IEEE Journal on Selected Topics in Quantum Electronics. 1, 2, p. 203-210 8 p.

Research output: Contribution to journalArticle

optical interconnects
Optical interconnects
laser arrays
threshold currents
thresholds

Ultralow threshold 1.3-μm strained-QW lasers for high-speed optical interconnections

Uomi, K., Tsuchiya, T., Kawano, T., Nakahara, K., Niwa, A. & Oishi, A., 1995, Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS. IEEE, Vol. 1. p. 105-106 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Optical interconnects
Quantum well lasers
Lasers
Semiconductor quantum wells
Light sources
16 Citations (Scopus)

Ultralow Threshold and Uniform Operation (1.3 ± 0.09 rnA) in 1.3-µm Strained-MQW 10-Element Laser Arrays for Parallel High-Density Optical Interconnects

Uomi, K., Tsuchiya, T., Komori, M., Oka, A., Kawano, T. & Oishi, A., 1995, In : IEEE Photonics Technology Letters. 7, 1, p. 1-3 3 p.

Research output: Contribution to journalArticle

optical interconnects
Optical interconnects
laser arrays
threshold currents
Light sources
1994
8 Citations (Scopus)

Dislocation reduction in InP layers grown on sawtooth-patterned GaAs substrates

Okuno, Y., Kawano, T., Koguchi, M., Nakamura, K. & Kakibayashi, H., 1994 Apr 1, In : Journal of Crystal Growth. 137, 3-4, p. 313-318 6 p.

Research output: Contribution to journalArticle

Crystalline materials
Substrates
Low pressure chemical vapor deposition
Lattice mismatch
Epitaxial layers
23 Citations (Scopus)

Investigation of effect of strain on low-threshold 1.3μm InGaAsP strained-layer quantum well lasers

Tsuchiya, T., Komori, M., Uomi, K., Oka, A., Kawano, T. & Oishi, A., 1994 May 12, In : Electronics Letters. 30, 10, p. 788-789 2 p.

Research output: Contribution to journalArticle

Quantum well lasers
Photoluminescence
Threshold current density
Full width at half maximum
Wavelength
12 Citations (Scopus)

New photonic device integration by selective-area move and its application to optical modulator/laser integration (invited paper)

Aoki, M., Suzuki, M., Taniwatari, T., Sano, H. & Kawano, T., 1994 Jan 1, In : Microwave and Optical Technology Letters. 7, 3, p. 132-139 8 p.

Research output: Contribution to journalArticle

Photonic devices
Light modulators
modulators
Semiconductor quantum wells
photonics
Power control
Photonics
photonics
Distributed feedback lasers
Organic chemicals
10 Citations (Scopus)

Study of threading dislocation reduction by strained interlayer in InP layers grown on GaAs substrates

Okuno, Y. & Kawano, T., 1994 Dec 2, In : Journal of Crystal Growth. 145, 1-4, p. 338-344 7 p.

Research output: Contribution to journalArticle

Lattice constants
interlayers
Strain relaxation
Metallorganic vapor phase epitaxy
Substrates
1993
161 Citations (Scopus)

InGaAs/InGaAsP MQW Electroabsorption Modulator Integrated with a DFB Laser Fabricated by Band-Gap Energy Control Selective Area MOCVD

Aoki, M., Suzuki, M., Sano, H., Kawano, T., Ido, T., Taniwatari, T., Uomi, K. & Takai, A., 1993, In : IEEE Journal of Quantum Electronics. 29, 6, p. 2088-2096 9 p.

Research output: Contribution to journalArticle

Electroabsorption modulators
Distributed feedback lasers
Metallorganic chemical vapor deposition
distributed feedback lasers
Power control
4 Citations (Scopus)

In situ X-ray monitoring of metalorganic vapor phase epitaxy

Tsuchiya, T., Taniwatari, T., Uomi, K., Kawano, T. & Ono, Y., 1993 Oct, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 32, 10, p. 4652-4655 4 p.

Research output: Contribution to journalArticle

Metallorganic vapor phase epitaxy
vapor phase epitaxy
Lattice mismatch
X rays
Monitoring
16 Citations (Scopus)

Low drive voltage and extremely low chirp integrated electroabsorption modulator/DFB laser for 2.5 Gbit/s 200 km normal fibre transmission

Aoki, M., Kikuchi, N., Sekine, K., Sasaki, S., Suzuki, M., Taniwatari, T., Okuno, Y., Takai, A. & Kawano, T., 1993 Jan 1, In : Electronics Letters. 29, 22, p. 1983-1984 2 p.

Research output: Contribution to journalArticle

Electroabsorption modulators
Distributed feedback lasers
Fibers
Electric potential
7 Citations (Scopus)
interlayers
Fabrication
Wavelength
fabrication
Lasers
1992
14 Citations (Scopus)

Heteroepitaxial GaAs layers on InP substrates: Radiative recombinations, strain relaxation, structural properties, and comparison with InP layers on GaAs

Olego, D. J., Okuno, Y., Kawano, T. & Tamura, M., 1992, In : Journal of Applied Physics. 71, 9, p. 4502-4508 7 p.

Research output: Contribution to journalArticle

radiative recombination
x ray diffraction
valence
photoluminescence
thermal expansion
3 Citations (Scopus)

Heteroepitaxial InP layers grown by metalorganic chemical vapor deposition on novel GaAs on Si buffers obtained by molecular beam epitaxy

Olego, D. J., Tamura, M., Okuno, Y., Kawano, T. & Hashimoto, A., 1992, In : Journal of Applied Physics. 71, 9, p. 4329-4332 4 p.

Research output: Contribution to journalArticle

metalorganic chemical vapor deposition
molecular beam epitaxy
buffers
interlayers
x ray diffraction
39 Citations (Scopus)

High-Extinction-Ratio MQW Electroabsorption-Modulator Integrated DFB Laser Fabricated by In-Plane Bandgap Energy Control Technique

Aoki, M., Takahashi, M., Suzuki, M., Sano, H., Uomi, K., Kawano, T. & Takai, A., 1992, In : IEEE Photonics Technology Letters. 4, 6, p. 580-582 3 p.

Research output: Contribution to journalArticle

Electroabsorption modulators
Distributed feedback lasers
Metallorganic chemical vapor deposition
threshold currents
Power control
53 Citations (Scopus)

High-speed (10 Gbit/s) and low-drive-voltage (1 V peak to peaK) InGaAs/InGaAsp MQW electroabsorption-modulator integrated DFB laser with semi-insulating buried heterostructure

Aoki, M., Suzuki, M., Takahashi, M., Sano, H., Ido, T., Kawano, T. & Takai, A., 1992 Jun 4, In : Electronics Letters. 28, 12, p. 1157-1158 2 p.

Research output: Contribution to journalArticle

Electroabsorption modulators
Distributed feedback lasers
Heterojunctions
Modulation
Electric potential
1 Citation (Scopus)

High-speed and low-drive-voltage MQW EA-modulator integrated DFB laser with semi-insulating BH structure

Aoki, M., Suzuki, M., Takahashi, M., Sano, H., Ido, T., Kawano, T. & Takai, A., 1992 Jan 1, Conference Digest - 13th IEEE International Semiconductor Laser Conference. Institute of Electrical and Electronics Engineers Inc., p. 166-167 2 p. 763621. (Conference Digest - IEEE International Semiconductor Laser Conference; vol. 1992-September).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Distributed feedback lasers
Modulators
modulators
high speed
Photonic devices
4 Citations (Scopus)

In-plane quantum energy control of InGaAs/InGaAsP MQW structure by mocvd selective area growth

Takahashi, M., Suzuki, M., Aoki, M., Uomi, K. & Kawano, T., 1992 Jan 1, LEOS 1992 Summer Topical Meeting Digest on Broadband Analog and Digital Optoelectronics, Optical Multiple Access Networks, Integrated Optoelectronics, and Smart Pixels - 4th International Conference on Indium Phosphide and Related Materials, IPRM 1992. Institute of Electrical and Electronics Engineers Inc., p. 206-209 4 p. 235603. (LEOS 1992 Summer Topical Meeting Digest on Broadband Analog and Digital Optoelectronics, Optical Multiple Access Networks, Integrated Optoelectronics, and Smart Pixels - 4th International Conference on Indium Phosphide and Related Materials, IPRM 1992).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Power control
Semiconductor quantum wells
quantum wells
energy
Electroabsorption modulators
2 Citations (Scopus)

In-situ X-ray monitoring in MOVPE and feedback growth of strained InGaAs

Tsuchiya, T., Taniwatari, T., Uomi, K., Kawano, T. & Ono, Y., 1992 Jan 1, LEOS 1992 Summer Topical Meeting Digest on Broadband Analog and Digital Optoelectronics, Optical Multiple Access Networks, Integrated Optoelectronics, and Smart Pixels - 4th International Conference on Indium Phosphide and Related Materials, IPRM 1992. Institute of Electrical and Electronics Engineers Inc., p. 646-649 4 p. 235554. (LEOS 1992 Summer Topical Meeting Digest on Broadband Analog and Digital Optoelectronics, Optical Multiple Access Networks, Integrated Optoelectronics, and Smart Pixels - 4th International Conference on Indium Phosphide and Related Materials, IPRM 1992).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Metallorganic chemical vapor deposition
metalorganic chemical vapor deposition
Feedback
X rays
Monitoring
17 Citations (Scopus)

Low-Threshold (3.2 mA per Element) 1.3 μm InGaAsP MQW Laser Array on a p-Type Substrate

Yamashita, S., Oka, A., Kawano, T., Tsuchiya, T., Saitoh, K., Uomi, K. & Ono, Y., 1992, In : IEEE Photonics Technology Letters. 4, 9, p. 954-957 4 p.

Research output: Contribution to journalArticle

laser arrays
thresholds
Lasers
Substrates
threshold currents
31 Citations (Scopus)

Structural and optoelectronic properties and their relationship with strain relaxation in heteroepitaxial InP layers grown on GaAs substrates

Olego, D. J., Okuno, Y., Kawano, T. & Tamura, M., 1992, In : Journal of Applied Physics. 71, 9, p. 4492-4501 10 p.

Research output: Contribution to journalArticle

radiative recombination
metalorganic chemical vapor deposition
x ray diffraction
low pressure
photoluminescence
1 Citation (Scopus)

Threading dislocation reduction in InP/GaAs by thin strained interlayer and its application to the fabrication of 1.3 μm wavelength laser on GaAs

Okuno, Y., Kawano, T., Tsuchiya, T. & Taniwatari, T., 1992, Conference on Solid State Devices and Materials. Publ by Business Cent for Acad Soc Japan, p. 610-612 3 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fabrication
Wavelength
Lasers
Substrates
Electron microscopes
1991
15 Citations (Scopus)

High-Power 780 Nm Algaas Quantum-Well Lasers and Their Reliable Operation

Yamashita, S., Nakatsuka, S. I., Uchida, K., Kawano, T. & Kajimura, T., 1991, In : IEEE Journal of Quantum Electronics. 27, 6, p. 1544-1549 6 p.

Research output: Contribution to journalArticle

Quantum well lasers
quantum well lasers
Semiconductor quantum wells
aluminum gallium arsenides
Ternary alloys
1990

780nm AlGaAs high-power lasers and their reliable operation

Yamashita, S., Nakatsuka, S., Uchida, K., Kawano, T. & Kajimura, T., 1990 Jan 1, In : Conference Digest - IEEE International Semiconductor Laser Conference. p. 278-279 2 p., 764525.

Research output: Contribution to journalConference article

High power lasers
high power lasers
aluminum gallium arsenides
1989
1 Citation (Scopus)
aluminum gallium arsenides
Semiconductor lasers
Refractive index
semiconductor lasers
Reflective coatings
23 Citations (Scopus)

Lasing wavelengths of index-guided AlGaInP semiconductor lasers as functions of off-angle from (100) plane of GaAs substrate

Tanaka, T., Minagawa, S., Kawano, T. & Kajimura, T., 1989 Jul 6, In : Electronics Letters. 25, 14, p. 905-907 3 p.

Research output: Contribution to journalArticle

Semiconductor lasers
Wavelength
Substrates
Laser modes
1988
13 Citations (Scopus)

High-power operation in self-sustained pulsating AlGaAs semiconductor lasers with multiquantum well active layer

Tanaka, T., Kawano, T. & Kajimura, T., 1988, In : Applied Physics Letters. 53, 25, p. 2471-2473 3 p.

Research output: Contribution to journalArticle

aluminum gallium arsenides
semiconductor lasers
low noise
flat surfaces
output
1987
13 Citations (Scopus)

IMPROVED SELF-ALIGNED STRUCTURE FOR GaAlAs HIGH-POWER LASERS.

Yoshizawa, M., Uomi, K., Ohishi, A., Ono, Y., Kawano, T., Nakashima, K. & Kajimura, T., 1987 Sep, Japanese Journal of Applied Physics, Part 2: Letters. 9 ed. Vol. 26. p. 1465-1467 3 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

High power lasers
Metallorganic chemical vapor deposition
Oxide films
Lasers
Temperature
1984
10 Citations (Scopus)

High-power visible GaAlAs lasers with self-aligned strip buried heterostructure

Ohtoshi, T., Kawano, T., Sasaki, Y., Kajimura, T., Chinone, N. & Nakamura, M., 1984, In : Journal of Applied Physics. 56, 9, p. 2491-2496 6 p.

Research output: Contribution to journalArticle

strip
lasers
waveguides
lasing
flat surfaces