M. Ekawa: search on Z-Library

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1

An ultrawide-band semiconductor optical amplifier having an extremely high penalty-free output power of 23 dBm achieved with quantum dots

T. Akiyama, M. Ekawa, M. Sugawara, K. Kawaguchi, Hisao Sudo, A. Kuramata, H. Ebe, Y. Arakawa

Journal:

IEEE Photonics Technology Letters

Year:

2005

Language:

english

File:

PDF, 494 KB

english, 2005

2

[IEEE 2014 International Semiconductor Laser Conference (ISLC) - Palma de Mallorca, Spain (2014.9.7-2014.9.10)] 2014 International Semiconductor Laser Conference - High-Speed Directly Modulated Distributed-Reflector Lasers

Matsuda, M., Uetake, A., Simoyama, T., Okumura, S., Takabayashi, K., Ekawa, M., Yamamoto, T.

Year:

2014

File:

PDF, 338 KB

2014

3

Formation of Ge-diffusion-suppressed GaAs layers and InAs quantum dots on Ge/Si substrates

Kenichi Kawaguchi, Hiroji Ebe, Mitsuru Ekawa, Akio Sugama, Yasuhiko Arakawa

Journal:

Journal of Crystal Growth

Year:

2010

Language:

english

File:

PDF, 395 KB

english, 2010

4

Tapered thickness MQW waveguide BH MQW lasers

Kobayashi, H., Ekawa, M., Okazaki, N., Aoki, O., Ogita, S., Soda, H.

Journal:

IEEE Photonics Technology Letters

Year:

1994

Language:

english

File:

PDF, 170 KB

english, 1994

5

Highly Uniform Eight-Channel SOA-Gate Array With High Saturation Output Power and Low Noise Figure

Tanaka, S., Tomabechi, S., Uetake, A., Ekawa, M., Morito, K.

Journal:

IEEE Photonics Technology Letters

Year:

2007

Language:

english

File:

PDF, 229 KB

english, 2007

6

Quantum-Dot Semiconductor Optical Amplifiers With Polarization-Independent Gains in 1.5-m Wavelength Bands

Yasuoka, N., Kawaguchi, K., Ebe, H., Akiyama, T., Ekawa, M., Morito, K., Sugawara, M., Arakawa, Y.

Journal:

IEEE Photonics Technology Letters

Year:

2008

Language:

english

File:

PDF, 79 KB

english, 2008

7

Polarization-Insensitive GaInNAs–GaInAs MQW-SOA With Low Noise Figure and Small Gain Tilt Over 90-nm Bandwidth (1510–1600 nm)

Tanaka, S., Uetake, A., Yamazaki, S., Ekawa, M., Morito, K.

Journal:

IEEE Photonics Technology Letters

Year:

2008

Language:

english

File:

PDF, 451 KB

english, 2008

8

[IEEE IEEE 14th International Semiconductor Laser Conference - Maui, HI, USA (19-23 Sept. 1994)] Proceedings of IEEE 14th International Semiconductor Laser Conference - Narrow beam tapered thickness waveguide integrated BH MQW laser operation at high temperatures

Kobayashi, H., Soda, H., Ekawa, M., Okazaki, N., Ogita, S., Yamazaki, S.

Year:

1994

Language:

english

File:

PDF, 151 KB

english, 1994

9

[IEEE 2012 IEEE 23rd International Semiconductor Laser Conference (ISLC) - San Diego, CA, USA (2012.10.7-2012.10.10)] ISLC 2012 International Semiconductor Laser Conference - 4-Wavelength 25.8-Gbps directly modulated laser array of 1.3-μm AlGaInAs distributed-reflector lasers

Simoyama, T., Matsuda, M., Okumura, S., Uetake, A., Ekawa, M., Yamamoto, T.

Year:

2012

Language:

english

File:

PDF, 578 KB

english, 2012

10

[IEEE 2006 IEEE 20th International Semiconductor Laser Conference, 2006. Conference Digest. - Kohala Coast, HI, USA ()] 2006 IEEE 20th International Semiconductor Laser Conference, 2006. Conference Digest. - 1.55-¿m -Wavelength AlGaInAs Multiple-Quantum-Well Semi-Insulating Buried-Heterostructure Lasers

Yamamoto, T., Takada, K., Matsuda, M., Okumura, S., Akiyama, S., Ekawa, M.

Year:

2006

Language:

english

File:

PDF, 262 KB

english, 2006

11

[IEEE 2008 IEEE 21st International Semiconductor Laser Conference (ISLC) - Sorrento, Italy (2008.09.14-2008.09.18)] 2008 IEEE 21st International Semiconductor Laser Conference - 40-Gb/s direct modulation of 1.3-μm semi-insulating buried-heterostructure AlGaInAs MQW DFB lasers

Otsubo, K., Matsuda, M., Takada, K., Okumura, S., Ekawa, M., Yamamoto, T.

Year:

2008

Language:

english

File:

PDF, 502 KB

english, 2008

12

[IEEE 2010 IEEE 22nd International Semiconductor Laser Conference (ISLC) - Kyoto, Japan (2010.09.26-2010.09.30)] 22nd IEEE International Semiconductor Laser Conference - Uncooled 40-Gbps direct modulation of 1.3-µm-wavelength AlGaInAs distributed reflector lasers with semi-insulating buried-heterostructure

Yamamoto, T., Uetake, A., Otsubo, K., Matsuda, M., Okumura, S., Tomabechi, S., Ekawa, M.

Year:

2010

Language:

english

File:

PDF, 437 KB

english, 2010

13

SPIE Proceedings [SPIE SPIE OPTO - San Francisco, California, USA (Saturday 21 January 2012)] Novel In-Plane Semiconductor Lasers XI - AlGaInAs semi-insulating buried-heterostructure distributed reflector lasers for low-driving-current high-speed direct modulation

Simoyama, Takasi, Belyanin, Alexey A., Smowton, Peter M., Matsuda, Manabu, Okumura, Shigekazu, Uetake, Ayahito, Ekawa, Mitsuru, Yamamoto, Tsuyoshi

Year:

2012

Language:

english

File:

PDF, 1.79 MB

english, 2012

14

[Journal of the Physical Society of Japan Proceedings of the 8th International Conference on Quarks and Nuclear Physics (QNP2018) - Tsukuba, Japan (November 13-17, 2018)] Proceedings of the 8th International Conference on Quarks and Nuclear Physics (QNP2018) - Operation Steps for Data Analysis on Double Hypernuclei in E07 Experiment

Nyaw, Aung Nay Lin, Ekawa, Hiroyuki, Hayakawa, Shuhei, Kasagi, Ayumi, Nakazawa, Kazuma, Yoshida, Junya, Yoshimoto, Masahiro

File:

PDF, 382 KB

15

Fabrication and photoluminescence properties of ZnTe and CdZnTe films by low pressure metalorganic chemical-vapour deposition

Mitsuru Ekawa, Yoichi Kawakami, Tsunemasa Taguchi, Akio Hiraki

Journal:

Journal of Crystal Growth

Year:

1988

Language:

english

File:

PDF, 943 KB

english, 1988

16

Effect of H2 heat-treatment of excitonic emission in MOCVD-grown CdTe films on (100) GaAs substrates

Onodera, Chikara, Ekawa, Mitsuru, Taguchi, Tsunemasa

Journal:

Journal of Crystal Growth

Year:

1990

Language:

english

File:

PDF, 336 KB

english, 1990

17

Surface oxidation of ZnHgTe and its interface reaction with metals

Tsunemasa Taguchi, Tokuhito Sasaki, Toshiyuki Terada, Mitsuru Ekawa, Akio Hiraki

Journal:

Journal of Crystal Growth

Year:

1990

Language:

english

File:

PDF, 487 KB

english, 1990

18

Mechanism of arsenic incorporation in MOVPE growth of CdTe layers

Mitsuru Ekawa, Kazuhito Yasuda, Masahisa Okada, Touati Ferid, Akikazu Tanaka, Manabu Saji

Journal:

Journal of Crystal Growth

Year:

1992

Language:

english

File:

PDF, 409 KB

english, 1992

19

A theory for metalorganic vapor phase epitaxial selective growth on planar patterned substrates

Takuya Fujii, Mitsuru Ekawa, Susumu Yamazaki

Journal:

Journal of Crystal Growth

Year:

1995

Language:

english

File:

PDF, 463 KB

english, 1995

20

Growth pressure dependence of selective area metalorganic vapor phase epitaxy on planar patterned substrates

Takuya Fujii, Mitsuru Ekawa, Susumu Yamazaki

Journal:

Journal of Crystal Growth

Year:

1995

Language:

english

File:

PDF, 567 KB

english, 1995

21

Controlling the size of InAs quantum dots on Si1−xGex/Si(0 0 1) by metalorganic vapor-phase epitaxy

Kenichi Kawaguchi, Hiroji Ebe, Mitsuru Ekawa, Akio Sugama, Yasuhiko Arakawa

Journal:

Materials Science and Engineering: B

Year:

2009

Language:

english

File:

PDF, 466 KB

english, 2009

22

Surfactant-related growth of InAs1−xSbx quantum structures on InP(0 0 1) by metalorganic vapor-phase epitaxy

Kenichi Kawaguchi, Mitsuru Ekawa, Tomoyuki Akiyama, Haruhiko Kuwatsuka, Mitsuru Sugawara

Journal:

Journal of Crystal Growth

Year:

2006

Language:

english

File:

PDF, 349 KB

english, 2006

23

Controlling shape of InAs1−xSbx quantum structures on InP for quantum dots with 1.55-μm emission

Kenichi Kawaguchi, Mitsuru Ekawa, Tomoyuki Akiyama, Haruhiko Kuwatsuka, Mitsuru Sugawara

Journal:

Journal of Crystal Growth

Year:

2007

Language:

english

File:

PDF, 672 KB

english, 2007

24

Formation of InAs1−xSbx quantum dots on vicinal InP(0 0 1) for 1.55-μm DFB laser applications

Kenichi Kawaguchi, Manabu Matsuda, Mitsuru Ekawa, Tsuyoshi Yamamoto, Haruhiko Kuwatsuka, Mitsuru Sugawara, Yasuhiko Arakawa

Journal:

Journal of Crystal Growth

Year:

2008

Language:

english

File:

PDF, 1017 KB

english, 2008

25

Effect of incorporation efficiency on dopant behaviors in selective-area metalorganic vapor phase epitaxy

Mitsuru Ekawa, Takuya Fujii, Toshiyuki Tanahashi

Journal:

Journal of Crystal Growth

Year:

1997

Language:

english

File:

PDF, 267 KB

english, 1997

26

Stress response and energy metabolism in various tissues of Nile tilapia Oreochromis niloticus exposed to hypoxic conditions

YASUNORI ISHIBASHI, HIDEAKI EKAWA, HACHIRO HIRATA, HIDEMI KUMAI

Journal:

Fisheries Science

Year:

2002

Language:

english

File:

PDF, 1.05 MB

english, 2002

27

1.3–1.6 µm broadband polarization-independent luminescence by columnar InAs quantum dots on InP(001)

Kenichi Kawaguchi, Mitsuru Ekawa, Nami Yasuoka, Tomoyuki Akiyama, Hiroji Ebe, Mitsuru Sugawara, Yasuhiko Arakawa

Journal:

physica status solidi (c)

Year:

2006

Language:

english

File:

PDF, 489 KB

english, 2006

28

Variation of surface morphology with precursor supply ratio in MOVPE CdTe layers

Touati Ferid, Mitsuru Ekawa, Kazuhito Yasuda, Akikazu Tanaka, Manabu Saji

Journal:

Journal of Crystal Growth

Year:

1993

Language:

english

File:

PDF, 342 KB

english, 1993

29

Identification of non-linear and non-stationary soil properties during the 1995 Hyogoken-nanbu earthquake

A. Mikami, T. Sawada, T. Ekawa

Journal:

Soil Dynamics and Earthquake Engineering

Year:

2003

Language:

english

File:

PDF, 388 KB

english, 2003

30

Detection of specific antibodies against deflagellated Salmonella Enteritidis and S. Enteritidis FliC-specific 9 kDa polypeptide

Naoe Mizumoto, Yukiko Toyota-Hanatani, Kazumi Sasai, Hiroyuki Tani, Tomoya Ekawa, Hiroaki Ohta, Eiichiroh Baba

Journal:

Veterinary Microbiology

Year:

2004

Language:

english

File:

PDF, 102 KB

english, 2004

31

Polarization-Insensitive Quantum Dot Semiconductor Optical Amplifiers Using Strain-Controlled Columnar Quantum Dots

Yasuoka, N., Ebe, H., Kawaguchi, K., Ekawa, M., Sekiguchi, S., Morito, K., Wada, O., Sugawara, M., Arakawa, Y.

Journal:

Journal of Lightwave Technology

Year:

2012

Language:

english

File:

PDF, 1.15 MB

english, 2012

32

1.3-m AlGaInAs Multiple-Quantum-Well Semi-insulating Buried-Heterostructure Distributed-Feedback Lasers for High-Speed Direct Modulation

Otsubo, K., Matsuda, M., Takada, K., Okumura, S., Ekawa, M., Tanaka, H., Ide, S., Mori, K., Yamamoto, T.

Journal:

IEEE Journal of Selected Topics in Quantum Electronics

Year:

2009

Language:

english

File:

PDF, 534 KB

english, 2009

33

High-output-power polarization-insensitive semiconductor optical amplifier

Morito, K., Ekawa, M., Watanabe, T., Kotaki, Y.

Journal:

Journal of Lightwave Technology

Year:

2003

Language:

english

File:

PDF, 147 KB

english, 2003

34

Output Level Control of SOA Using On-Chip Heater for High Output Power Operation

Tanaka, S., Uetake, A., Yamazaki, S., Ekawa, M., Morito, K.

Journal:

Journal of Lightwave Technology

Year:

2010

Language:

english

File:

PDF, 763 KB

english, 2010

35

Study of multiple-stacking growth of 1.55 μm InAs columnar quantum dots with modulated tensile-strained InGaAsP barrier layers

Shigekazu Okumura, Nami Yasuoka, Kenichi Kawaguchi, Yu Tanaka, Mitsuru Ekawa

Journal:

Journal of Crystal Growth

Year:

2012

Language:

english

File:

PDF, 751 KB

english, 2012

36

An improvement of robot arm for EEG-based brain-computer interface system

Youko Ekawa, Tomoya Nishida, Nobuyuki Yamawaki

Journal:

Neuroscience Research

Year:

2010

Language:

english

File:

PDF, 90 KB

english, 2010

37

Importance of the major Fli C antigenic site of Salmonella enteritidis as a subunit vaccine antigen

Yukiko Toyota-Hanatani, Makoto Inoue, Tomoya Ekawa, Hiroaki Ohta, Shizunobu Igimi, Eiichiroh Baba

Journal:

Year:

2008

Language:

english

File:

PDF, 311 KB

english, 2008

38

Importance of subunit vaccine antigen of major Fli C antigenic site of Salmonella Enteritidis II: A challenge trial

Yukiko Toyota-Hanatani, Yusuke Kyoumoto, Eiichiroh Baba, Tomoya Ekawa, Hiroaki Ohta, Hiroyuki Tani, Kazumi Sasai

Journal:

Year:

2009

Language:

english

File:

PDF, 343 KB

english, 2009

39

Narrow-beam divergence 1.3-μm multiple-quantum-well laser diodes with monolithically integrated tapered thickness waveguide

Kobayashi, H., Yamamoto, T., Ekawa, M., Watanabe, T., Ishikawa, T., Fujii, T., Soda, H., Ogita, S., Kobayashi, M.

Journal:

IEEE Journal of Selected Topics in Quantum Electronics

Year:

1997

Language:

english

File:

PDF, 148 KB

english, 1997

40

Monolithically Integrated 8:1 SOA Gate Switch With Large Extinction Ratio and Wide Input Power Dynamic Range

Tanaka, S., Seok-Hwan Jeong, Yamazaki, S., Uetake, A., Tomabechi, S., Ekawa, M., Morito, K.

Journal:

IEEE Journal of Quantum Electronics

Year:

2009

Language:

english

File:

PDF, 1.31 MB

english, 2009

41

Ground state lasing at 1.30 µm from InAs/GaAs quantum dot lasers grown by metal–organic chemical vapor deposition

Guimard, Denis, Ishida, Mitsuru, Bordel, Damien, Li, Lin, Nishioka, Masao, Tanaka, Yu, Ekawa, Mitsuru, Sudo, Hisao, Yamamoto, Tsuyoshi, Kondo, Hayato, Sugawara, Mitsuru, Arakawa, Yasuhiko

Journal:

Year:

2010

Language:

english

File:

PDF, 958 KB

english, 2010

42

Restriction fragment length polymorphisms near the islet amyloid polypeptide gene in Japanese subjects

Shinya Ohagi, Kunihiro Ekawa, Tokio Sanke, Masahiro Nishi, Kishio Nanjo

Journal:

Diabetes Research and Clinical Practice

Year:

1992

Language:

english

File:

PDF, 1.12 MB

english, 1992

43

Molecular biology of islet amyloid polypeptide

Masahiro Nishi, Tokio Sanke, Shinya Ohagi, Kunihiro Ekawa, Hisao Wakasaki, Kishio Nanjo, Graeme I. Bell, donald F. Steiner

Journal:

Diabetes Research and Clinical Practice

Year:

1992

Language:

english

File:

PDF, 1.61 MB

english, 1992

44

Membrane topology of Salmonella invasion protein SipB confers osmotolerance

Hiroshi Asakura, Tomoya Ekawa, Naoki Sugimoto, Yoshika Momose, Keiko Kawamoto, Sou-ichi Makino, Shizunobu Igimi, Shigeki Yamamoto

Journal:

Biochemical and Biophysical Research Communications

Year:

2012

Language:

english

File:

PDF, 289 KB

english, 2012

45

Mura-detection method by using a slit-beam ellipsometer

Hideyuki Murai, Koichi Ekawa, Jun Takashima, Hitoshi Naito, Nobuo Nakatsuka

Journal:

Journal of the Society for Information Display

Year:

2007

Language:

english

File:

PDF, 2.25 MB

english, 2007

46

Demonstration of transverse-magnetic dominant gain in quantum dot semiconductor optical amplifiers

Yasuoka, Nami, Kawaguchi, Kenichi, Ebe, Hiroji, Akiyama, Tomoyuki, Ekawa, Mitsuru, Tanaka, Shinsuke, Morito, Ken, Uetake, Ayahito, Sugawara, Mitsuru, Arakawa, Yasuhiko

Journal:

Applied Physics Letters

Year:

2008

Language:

english

File:

PDF, 476 KB

english, 2008

47

SPIE Proceedings [SPIE SPIE OPTO - San Francisco, California, USA (Saturday 21 January 2012)] Quantum Dots and Nanostructures: Synthesis, Characterization, and Modeling IX - Increase in photoluminescence intensity of InAs columnar quantum dots on InP(001) substrate by increasing indium and phosphorous composition in InGaAsP barrier layers

Okumura, Shigekazu, Yasuoka, Nami, Kawaguchi, Kenichi, Tanaka, Yu, Ekawa, Mitsuru, Eyink, Kurt G., Szmulowicz, Frank, Huffaker, Diana L.

Year:

2012

Language:

english

File:

PDF, 1.26 MB

english, 2012

48

SPIE Proceedings [SPIE SPIE OPTO - San Francisco, California, USA (Saturday 21 January 2012)] Quantum Dots and Nanostructures: Synthesis, Characterization, and Modeling IX - Improvement of temperature stability in columnar quantum dots by introducing side barriers with larger bandgap energy for semiconductor optical amplifiers

Yasuoka, Nami, Okumura, Shigekazu, Ebe, Hiroji, Tanaka, Yu, Ekawa, Mutsuri, Nakata, Yoshiaki, Sugawara, Mitsuru, Arakawa, Yasuhiko, Eyink, Kurt G., Szmulowicz, Frank, Huffaker, Diana L.

Year:

2012

Language:

english

File:

PDF, 977 KB

english, 2012

49

Xps and Aes Studies of the Initial Stage of CdTe Growth on (100) GaAs by Movpe

Ekawa, Mitsuru, Yasuda, Kazuhito, Sone, Syuji, Sugiura, Yoshiyuki, Saji, Manabu, Tanaka, Akikazu

Journal:

MRS Proceedings

Year:

1990

Language:

english

File:

PDF, 387 KB

english, 1990

50

J-PARC E27 Experiment to Search for a Nuclear Kaon Bound StateK−pp

Y. Ichikawa, H. C. Bhang, S. Bufalino, H. Ekawa, P. Evtoukhovitch…

Journal:

Few-Body Systems

Year:

2013

Language:

english

File:

PDF, 163 KB

english, 2013

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