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Article
2019

Camera sensor platform for high speed video data transmission using a wideband electro-optic polymer modulator

Cheng, X., Qiu, F., Spring, A. M., Sasaki, M., Kashino, T., Ozawa, M., Nawata, H., Kita, T., Sugihara, O. & Yokoyama, S., 2019 Feb 4, In : Optics Express. 27, 3, p. 1877-1883 7 p.

Research output: Contribution to journalArticle

Compact thermo-optic MZI switch in silicon-on-insulator using direct carrier injection

Mendez Astudillo, M., Okamoto, M., Ito, Y. & Kita, T., 2019 Jan 21, In : Optics Express. 27, 2, p. 899-906 8 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Rectangular resonators on silicon-on-insulator with large sensing area for object detection

Mendez-Astudillo, M., Okayama, H., Nakajima, H. & Kita, T., 2019 Jan 1, In : Japanese journal of applied physics. 58, SJ, SJJD04.

Research output: Contribution to journalArticle

Open Access
2018

Compact narrow-linewidth optical negative feedback laser with Si optical filter

Aoyama, K., Kobayashi, S., Wada, M., Yokota, N., Kita, T. & Yasaka, H., 2018 Nov 1, In : Applied Physics Express. 11, 11, 112703.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Tunable Dual-Wavelength Heterogeneous Quantum Dot Laser Diode with a Silicon External Cavity

Kita, T., Matsumoto, A., Yamamoto, N. & Yamada, H., 2018 Jan 15, In : Journal of Lightwave Technology. 36, 2, p. 219-224 6 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)
2016

Heterogeneous quantum dot/silicon photonics-based wavelength-tunable laser diode with a 44 nm wavelength-tuning range

Kita, T., Yamamoto, N., Matsumoto, A., Kawanishi, T. & Yamada, H., 2016 Apr 1, In : Japanese Journal of Applied Physics. 55, 4, 04EH11.

Research output: Contribution to journalArticle

15 Citations (Scopus)
13 Citations (Scopus)
2015

Compact silicon photonic wavelength-tunable laser diode with ultra-wide wavelength tuning range

Kita, T., Tang, R. & Yamada, H., 2015 Mar 16, In : Applied Physics Letters. 106, 11, 111104.

Research output: Contribution to journalArticle

12 Citations (Scopus)

Narrow-spectral-linewidth silicon photonic wavelength-tunable laser with highly asymmetric Mach-Zehnder interferometer

Tang, R., Kita, T. & Yamada, H., 2015 Jan 1, In : Optics Letters. 40, 7, p. 1504-1507 4 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)

Optimum waveguide-core size for reducing device property distribution of Si-wire waveguide devices

Soma, M., Kita, T., Tanushi, Y., Toyama, M., Seki, M., Yokoyama, N., Ohtsuka, M. & Yamada, H., 2015 Jan 1, In : Japanese Journal of Applied Physics. 54, 4, 04DG03.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Silicon photonic hybrid ring-filter external cavity wavelength tunable lasers

Kobayashi, N., Sato, K., Namiwaka, M., Yamamoto, K., Watanabe, S., Kita, T., Yamada, H. & Yamazaki, H., 2015 Mar 15, In : Journal of Lightwave Technology. 33, 6, p. 1241-1246 6 p., 6994779.

Research output: Contribution to journalArticle

86 Citations (Scopus)

Ultra-compact wavelength-tunable quantum-dot laser with silicon-photonics double ring filter

Kita, T., Yamamoto, N., Kawanishi, T. & Yamada, H., 2015 Jun 1, In : Applied Physics Express. 8, 6, 062701.

Research output: Contribution to journalArticle

19 Citations (Scopus)
2014

Long external cavity Si photonic wavelength tunable laser diode

Kita, T., Nemoto, K. & Yamada, H., 2014 Apr, In : Japanese journal of applied physics. 53, 4 SPEC. ISSUE, 04EG04.

Research output: Contribution to journalArticle

16 Citations (Scopus)

Silicon Photonic Wavelength-Tunable Laser Diode with Asymmetric Mach-Zehnder Interferometer

Kita, T., Nemoto, K. & Yamada, H., 2014 Jul 1, In : IEEE Journal on Selected Topics in Quantum Electronics. 20, 4, 6690107.

Research output: Contribution to journalArticle

28 Citations (Scopus)
2012

Analysis of phase matching conditions for generating second harmonic in ZnO channel waveguides

Taira, Y., Kita, T., Yoshio, E., Teraoka, M. & Yamada, H., 2012 Apr 1, In : Japanese journal of applied physics. 51, 4 PART 2, 04DG04.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Narrow-spectral-linewidth wavelength-tunable laser diode with si wire waveguide ring resonators

Nemoto, K., Kita, T. & Yamada, H., 2012 Aug 1, In : Applied Physics Express. 5, 8, 082701.

Research output: Contribution to journalArticle

32 Citations (Scopus)
2011

Analysis of the nonlinear optical parameter of ZnO channel waveguides

Teraoka, E. Y. M., Kita, T., Broaddus, D. H., Tsukazaki, A., Kawasaki, M., Gaeta, A. L. & Yamada, H., 2011 Apr 1, In : Japanese journal of applied physics. 50, 4 PART 2, 04DG01.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Optical crossing and integration using hybrid Si-wire/silica waveguides

Wakayama, Y., Kita, T. & Yamada, H., 2011 Apr 1, In : Japanese journal of applied physics. 50, 4 PART 2, 04DG20.

Research output: Contribution to journalArticle

6 Citations (Scopus)
2010

Self-phase modulation at visible wavelengths in nonlinear ZnO channel waveguides

Teraoka, E. Y. M., Broaddus, D. H., Kita, T., Tsukazaki, A., Kawasaki, M., Gaeta, A. L. & Yamada, H., 2010 Aug 16, In : Applied Physics Letters. 97, 7, 071105.

Research output: Contribution to journalArticle

16 Citations (Scopus)

ZnO channel waveguides for nonlinear optical applications

Teraoka, E. Y. M., Kita, T., Tsukazaki, A., Kawasaki, M., Ohtera, Y. & Yamada, H., 2010 Apr 1, In : Japanese journal of applied physics. 49, 4 PART 2, 04DG15.

Research output: Contribution to journalArticle

7 Citations (Scopus)
2008

Effect of vertical electric fields on exciton fine structure of GaAs natural quantum dots

Marcet, S., Kita, T., Ohtani, K. & Ohno, H., 2008 Apr 1, In : Physica E: Low-Dimensional Systems and Nanostructures. 40, 6, p. 2069-2071 3 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Fabrication of a few-electron In0.56Ga0.44As vertical quantum dot with an Al2O3 gate insulator

Kita, T., Chiba, D., Ohno, Y. & Ohno, H., 2008 Apr 1, In : Physica E: Low-Dimensional Systems and Nanostructures. 40, 6, p. 1930-1932 3 p.

Research output: Contribution to journalArticle

Fine structure in magnetospectrum of vertical quantum dot

Agafonov, O. B., Kita, T., Ohno, H. & Haug, R. J., 2008 Mar 1, In : Physica E: Low-Dimensional Systems and Nanostructures. 40, 5, p. 1630-1632 3 p.

Research output: Contribution to journalArticle

2007

(In,Ga)As gated-vertical quantum dot with an Al2O3 insulator

Kita, T., Chiba, D., Ohno, Y. & Ohno, H., 2007 Feb 19, In : Applied Physics Letters. 90, 6, 062102.

Research output: Contribution to journalArticle

7 Citations (Scopus)

A few-electron vertical In0.56Ga0.44As quantum dot with an insulating gate

Kita, T., Chiba, D., Ohno, Y. & Ohno, H., 2007 Dec 14, In : Applied Physics Letters. 91, 23, 232101.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Quantum hall effect in polar oxide heterostructures

Tsukazaki, A., Ohtomo, A., Kita, T., Ohno, Y., Ohno, H. & Kawasaki, M., 2007 Mar 9, In : Science. 315, 5817, p. 1388-1391 4 p.

Research output: Contribution to journalArticle

453 Citations (Scopus)
2006

Bias voltage dependence of the electron spin injection studied in a three-terminal device based on a (Ga,Mn) As/ n+-GaAs Esaki diode

Kohda, M., Kita, T., Ohno, Y., Matsukura, F. & Ohno, H., 2006 Jul 17, In : Applied Physics Letters. 89, 1, 012103.

Research output: Contribution to journalArticle

36 Citations (Scopus)

Pulse-width and magnetic-field dependences of current-induced magnetization switching in a (Ga,Mn)As magnetic tunnel junction

Chiba, D., Kita, T., Matsukura, F. & Ohno, H., 2006 May 25, In : Journal of Applied Physics. 99, 8, 08G514.

Research output: Contribution to journalArticle

7 Citations (Scopus)
2005

Spin-polarized transport in adiabatic quantum point contact with strong Rashba spin-orbit interaction

Kita, T., Kakegawa, T., Akabori, M. & Yamada, S., 2005 Nov 1, In : Solid State Communications. 136, 8, p. 479-483 5 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
2004

Current-driven magnetization reversal in a ferromagnetic semiconductor (Ga, Mn)As/GaAs/(Ga, Mn)As tunnel junction

Chiba, D., Sato, Y., Kita, T., Matsukura, F. & Ohno, H., 2004 Nov 19, In : Physical Review Letters. 93, 21, 216602.

Research output: Contribution to journalArticle

135 Citations (Scopus)
2003

Observation of e2/h conductance steps in a side-gate point contact on In0.75Ga0.25As/In0.75Al 0.25As heterostructure

Kita, T., Gozu, S., Sato, Y. & Yamada, S., 2003 Dec 1, In : Journal of Superconductivity and Novel Magnetism. 16, 2, p. 327-329 3 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)
2002

Spontaneous spin-splitting observed in resonant tunneling diode with narrow band-gap asymmetric quantum well

Yamada, S., Kikutani, T., Gozu, S., Sato, Y. & Kita, T., 2002 Mar 1, In : Physica E: Low-Dimensional Systems and Nanostructures. 13, 2-4, p. 815-818 4 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)
2001

An investigation of tunable spin-orbit interactions in front-gated In0.75Ga0.25As/In0.75Al0.25As heterojunctions

Sato, Y., Gozu, S. I., Kita, T. & Yamada, S., 2001 May 1, In : Physica E: Low-Dimensional Systems and Nanostructures. 10, 1-3, p. 77-80 4 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Critical layer thickness study in In0.75Ga0.25As/In0.5Al0.5As pseudomorphic resonant tunneling diode structure grown on GaAs substrates

Gozu, S. I., Kita, T., Kikutani, T. & Yamada, S., 2001 Jul, In : Journal of Crystal Growth. 227, 228, p. 161-166 6 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)
2 Citations (Scopus)
18 Citations (Scopus)

Large spontaneous spin splitting in gate-controlled two-dimensional electron gases at normal In0.75Ga0.25As/In0.75Al0.25As heterojunctions

Sato, Y., Kita, T., Gozu, S. & Yamada, S., 2001 Jun 1, In : Journal of Applied Physics. 89, 12, p. 8017-8021 5 p.

Research output: Contribution to journalArticle

200 Citations (Scopus)