Press Release

Publications in 2023

1. Y. Sekine, K. Oguri, H. Hibino, H. Kageshima, and Y. Taniyasu

   Polarized Raman scattering spectroscopy of array of embedded graphene ribbons grown on 4H-SiC(0001)

   Appl. Phys. Express 16 (6), 065001 (2023).

2. Y. Kikkawa, A. Ishizawa, R. Kou, X. J. Xu, K. Yoshida, T. Tsuchizawa, T. Aihara, T. Nishikawa, G. W. Cong, K. Hitachi, N. Yamamoto, K. Yamada, and K. Oguri

   Sub-30-fs fibre-coupled electro-optic modulation comb at 1.5 mu m with a 25-GHz repetition rate

   Electron. Lett. 59 (11)(2023).

3. A. Ishizawa, T. Nishikawa, K. Hitachi, T. Akatsuka, and K. Oguri

   Optical-referenceless optical frequency counter with twelve-digit absolute accuracy

   Sci Rep 13 (1)(2023).

4. T. Okamoto, Y. Kunihashi, Y. Shinohara, H. Sanada, K. Oguri, and M. C. Chen

   Operation at 1 MHz of 1.7-cycle multiple plate compression at 35-W average output power

   Opt. Lett. 48 (10) 2579-2582 (2023).

5. Y. Kunihashi, Y. Shinohara, S. Hasegawa, H. Nishinaka, M. Yoshimoto, K. Oguri, H. Gotoh, M. Kohda, J. Nitta, and H. Sanada

   Bismuth induced enhancement of Rashba spin-orbit interaction in GaAsBi/GaAs heterostructures

   Appl. Phys. Lett. 122 (18), 182402 (2023).

6. M. Takiguchi, G. Q. Zhang, S. Sasaki, K. Tateno, C. John, M. Ono, H. Sumikura, A. Shinya, and M. Notomi

   Damage protection from focused ion beam process toward nanocavity-implemented compound semiconductor nanowire lasers

   Nanotechnology 34 (13), 135301 (2023).

7. R. Kou, A. Ishizawa, K. Yoshida, N. Yamamoto, X. J. Xu, Y. Kikkawa, K. Kawashima, T. Ihara, T. Suchizawa, G. W. Cong, K. Hitachi, T. Nishikawa, K. Oguri, and K. Yamada

   Spatially resolved multimode excitation for smooth supercontinuum generation in a SiN waveguide

   Opt. Express 31 (4) 6088-6098 (2023).

Publications in 2022

1. S. Yasui, M. Hiraishi, A. Ishizawa, H. Omi, T. Inaba, X. Xu, R. Kaji, S. Adachi, and T. Tawara

   Creation of a high-resolution atomic frequency comb and optimization of the pulse sequence for high-efficiency quantum memory in 167Er:Y2SiO5

   Opt. Continuum 1 (9) 1896-1908 (2022).

2. P. L. Helgers, J. A. Stotz, H. Sanada, Y. Kunihashi, K. Biermann, and P. V. Santos

   Flying electron spin control gates

   Nat. Commun. 13 (1), 5384 (2022).

3. H. Sakuma, T. Akatsuka, H. Imai, K. Arai, R. Sugiyama, K. Oguri, and T. Miyamura

   Stable reference wave generation using a repeater laser for remote digital holography

   Jpn. J. Appl. Phys. 61 (7), 078001 (2022).

4. Y. Tanaka, Y. Krockenberger, Y. Kunihashi, H. Sanada, H. Omi, H. Gotoh, and K. Oguri

   Thermodynamic constraints and substrate influences on the growth of high-quality Bi2Te3 thin films by pulsed laser deposition

   Appl. Phys. Express 15 (6), 065502 (2022).

5. A. Ishizawa, K. Kawashima, R. Kou, X. J. Xu, T. Tsuchizawa, T. Aihara, K. Yoshida, T. Nishikawa, K. Hitachi, G. Cong, N. Yamamoto, K. Yamada, and K. Oguri

   Direct f-3f self-referencing using an integrated silicon-nitride waveguide

   Opt. Express 30 (4) 5265-5273 (2022).

Publications in 2021

1. W. Choi, G. Q. Zhang, H. C. Huang, P. K. Mohseni, C. Zhang, J. D. Kim, and X. L. Li

   Monolithic lateral p-n junction GaAs nanowire diodes via selective lateral epitaxy

   Nanotechnology 32 (50), 505203 (2021).

2. X. J. Xu, T. Inaba, T. Tsuchizawa, A. Ishizawa, H. Sanada, T. Tawara, H. Omi, K. Oguri, and H. Gotoh

   Low-loss erbium-incorporated rare-earth oxide waveguides on Si with bound states in the continuum and the large optical signal enhancement in them

   Opt. Express 29 (25) 41132-41143 (2021).

3. H. Sakuma, H. Imai, K. Arai, R. Sugiyama, T. Akatsuka, K. Oguri, and T. Miyamura

   Remote digital holography using a repeater laser for reference beam generation

   Jpn. J. Appl. Phys. 60 (12), 122004 (2021).

4. S. Yasui, M. Hiraishi, A. Ishizawa, H. Omi, R. Kaji, S. Adachi, and T. Tawara

   Precise spectroscopy of Er-167:Y2SiO5 based on laser frequency stabilization using a fiber laser comb

   Opt. Express 29 (17) 27137-27148 (2021).

5. K. Ishikawa, Y. Shiraki, T. Moriya, A. Ishizawa, K. Hitachi, and K. Oguri

   Low-noise optical measurement of sound using midfringe locked interferometer with differential detection

   J. Acoust. Soc. Am. 150 (2) 1514-1523 (2021).

6. M. Takiguchi, G. Q. Zhang, E. Frandsen, H. Sumikura, T. Tsuchizawa, S. Sasaki, A. Shinya, K. Oguri, H. Gotoh, and M. Notomi

   Thermal effect of InP/InAs nanowire lasers integrated on different optical platforms

   OSA Continuum 4 (6) 1838-1845 (2021).

7. K. Y. Chang, L. C. Huang, K. Asaga, M. S. Tsai, L. Rego, P. C. Huang, H. Mashiko, K. Oguri, C. Hernandez-Garcia, and M. C. Chen

   High-order nonlinear dipole response characterized by extreme ultraviolet ellipsometry

   Optica 8 (4) 484-492 (2021).

8. T. Akatsuka, K. Hashiguchi, T. Takahashi, N. Ohmae, M. Takamoto, and H. Katori

   Three-stage laser cooling of Sr atoms using the 5s5p P-3(2) metastable state below Doppler temperatures

   Phys. Rev. A 103 (2), 023331 (2021).

Publications in 2020

1. M. Takiguchi, S. Sasaki, K. Tateno, E. Chen, K. Nozaki, S. Sergent, E. Kuramochi, G. Q. Zhang, A. Shinya, and M. Notomi

   Hybrid Nanowire Photodetector Integrated in a Silicon Photonic Crystal

   ACS Photonics 7 (12) 5467-5473 (2020).

2. M. Asano, G. Q. Zhang, T. Tawara, H. Yamaguchi, and H. Okamoto

   Near-field cavity optomechanical coupling in a compound semiconductor nanowire

   Commun. Phys. 3 (1), 230 (2020).

3. M. Notomi, M. Takiguchi, S. Sergent, G. Q. Zhang, and H. Sumikura

   Nanowire photonics toward wide wavelength range and subwavelength confinement [Invited]

   Opt. Mater. Express 10 (10) 2560-2596 (2020).

4. G. Q. Zhang, D. Gnatek, M. Takiguchi, X. J. Xu, K. Tateno, S. Sasaki, T. Tawara, and H. Gotoh

   Nanowire-based telecom-band light-emitting diodes with efficient light extraction

   Jpn. J. Appl. Phys. 59 (10), 105003 (2020).

5. H. Mashiko, M. C. Chen, K. Asaga, A. Oshima, I. Katayama, J. Takeda, T. Nishikawa, and K. Oguri

   Spatially resolved spectral phase interferometry with an isolated attosecond pulse

   Opt. Express 28 (14) 21025-21034 (2020).

6. K. Sasaki, and K. Hitachi

   Universal layer number in graphite

   Commun. Phys. 3 (1), 90 (2020).

7. X. J. Xu, V. Fili, W. Szuba, M. Hiraishi, T. Inaba, T. Tawara, H. Omi, and H. Gotoh

   Epitaxial single-crystal rare-earth oxide in horizontal slot waveguide for silicon-based integrated active photonic devices

   Opt. Express 28 (10) 14448-14460 (2020).

8. Y. Sekine, H. Hibino, K. Oguri, A. Iwamoto, M. Nagase, H. Kageshima, and T. Akazaki

   Surface-enhanced Raman scattering from buffer layer under graphene on SiC in a wide energy range from visible to near-infrared

   Jpn. J. Appl. Phys. 59 (4), 040902 (2020).

9. T. Akatsuka, T. Goh, H. Imai, K. Oguri, A. Ishizawa, I. Ushijima, N. Ohmae, M. Takamoto, H. Katori, T. Hashimoto, H. Gotoh, and T. Sogawa

   Optical frequency distribution using laser repeater stations with planar lightwave circuits

   Opt. Express 28 (7) 9186-9197 (2020).

10. K. Kato, H. Mashiko, Y. Kunihashi, H. Omi, H. Gotoh, and K. Oguri

    Highly sensitive transient reflection measurement in extreme ultraviolet region for tracking carrier and coherent phonon dynamics

    Opt. Express 28 (2) 1595-1602 (2020).

11. H. Sanada, A. M. Stramma, Y. Kunihashi, Y. Tanaka, H. Gotoh, K. Onomitsu, F. Tagarelli, M. Kohda, J. Nitta, and T. Sogawa

    Spin accumulation in photo-induced potential dimples generated in semiconductors

    Commun. Phys. 3 (1), 11 (2020).

Publications in 2019

1. H. Sumikura, G. Q. Zhang, M. Takiguchi, N. Takemura, A. Shinya, H. Gotoh, and M. Notomi

   Mid-Infrared Lasing of Single Wurtzite InAs Nanowire

   Nano Lett. 19 (11) 8059-8065 (2019).

2. M. Hiraishi, M. IJspeert, T. Tawara, S. Adachi, R. Kaji, H. Omi, and H. Gotoh

   Optical coherent transients in Er-167(3+) at telecom-band wavelength

   Opt. Lett. 44 (20) 4933-4936 (2019).

3. Y. Yonezu, R. Kou, H. Nishi, T. Tsuchizawa, K. Yamada, T. Aoki, A. Ishizawa, and N. Matsuda

   Evaluation of graphene optical nonlinearity with photon-pair generation in graphene-on-silicon waveguides

   Opt. Express 27 (21) 30262-30271 (2019).

4. R. Kou, N. Yamamoto, G. Fujii, T. Aihara, T. Tsuchizawa, A. Ishizawa, K. Hitachi, H. Gotoh, M. Ukibe, and K. Yamada

   Spectrometric analysis of silicon nitride films deposited by low-temperature liquid-source CVD

   J. Appl. Phys. 126 (13), 133101 (2019).

5. P. L. Helgers, H. Sanada, Y. Kunihashi, A. Rubino, C. J. Ford, K. Biermann, and P. V. Santos

   Sidewall Quantum Wires on GaAs(001) Substrates

   Phys. Rev. Appl. 11 (6), 064017 (2019).

6. H. Okamoto, K. Takita, K. Tsushima, T. Tawara, K. Tateno, G. Q. Zhang, and H. Gotoh

   Low-temperature formation of GeSn nanodots by Sn mediation

   Jpn. J. Appl. Phys. 58, SDDG09 (2019).

7. K. Tsushima, K. Takita, H. Nakazawa, T. Tawara, K. Tateno, G. Q. Zhang, H. Gotoh, and H. Okamoto

   Study on the formation mechanism of bismuth-mediated Ge nanodots fabricated by vacuum evaporation

   Jpn. J. Appl. Phys. 58, SDDG10 (2019).

8. A. Ishizawa, K. Hitomi, K. Hara, K. Hitachi, T. Nishikawa, T. Sogawa, and H. Gotoh

   Simple method for stabilizing an optical frequency comb to an optical reference without an RF signal generator

   OSA Continuum 2 (5) 1706-1712 (2019).

9. R. Ohta, H. Okamoto, T. Tawara, H. Gotoh, and H. Yamaguchi

   Strain-induced exciton decomposition and anisotropic lifetime modulation in a GaAs micromechanical resonator

   Phys. Rev. B 99 (11), 115315 (2019).

10. G. Q. Zhang, M. Takiguchi, K. Tateno, T. Tawara, M. Notomi, and H. Gotoh

    Telecom-band lasing in single InP/InAs heterostructure nanowires at room temperature

    Sci. Adv. 5 (2), eaat8896 (2019).

11. Y. Tanaka, Y. Kunihashi, H. Sanada, H. Gotoh, K. Onomitsu, M. Kohda, J. Nitta, and T. Sogawa

    Phase velocity of drifting spin wave packets in semiconductor two-dimensional electron gas

    Appl. Phys. Express 12 (1), 013001 (2019).

12. K. Tateno, G. Q. Zhang, S. Sasaki, M. Takiguchi, and K. Kumakura

    Wurtzite GaP nanowire grown by using tertiarybutylchloride and used to fabricate solar cell

    Jpn. J. Appl. Phys. 58 (1), 015004 (2019).

Publications in 2018

1. K. Hitachi, M. Someya, A. Ishizawa, T. Nishikawa, and H. Gotoh

   Characterization of longitudinal acoustic phonons in InGaAsP multiple quantum wells by asynchronous optical sampling

   Appl. Phys. Lett. 113 (20), 201102 (2018).

2. K. Tateno, G. Q. Zhang, M. Takiguchi, and H. Gotoh

   Alternating InAsP/InP heterostructure nanowires grown with tertiary-butyl chloride

   Nano Futures 2 (4), UNSP 045006 (2018).

3. T. Inaba, T. Tawara, H. Omi, H. Yamamoto, and H. Gotoh

   Epitaxial growth and optical properties of Er-doped CeO2 on Si(111)

   Opt. Mater. Express 8 (9) 2843-2849 (2018).

4. R. Ohta, H. Okamoto, T. Tawara, H. Gotoh, and H. Yamaguchi

   Dynamic Control of the Coupling between Dark and Bright Excitons with Vibrational Strain

   Phys. Rev. Lett. 120 (26), 267401 (2018).

5. M. Takiguchi, G. Q. Zhang, S. Sasaki, K. Nozaki, E. Chen, K. Tateno, T. Tawara, A. Shinya, H. Gotoh, and M. Notomi

   Direct modulation of a single InP/InAs nanowire light-emitting diode

   Appl. Phys. Lett. 112 (25), 251106 (2018).

6. S. Adachi, Y. Kawakami, R. Kaji, T. Tawara, and H. Omi

   Investigation of Population Dynamics in 1.54-mu m Telecom Transitions of Epitaxial (ErxSc1-x)(2)O-3 Thin Layers for Coherent Population Manipulation: Weak Excitation Regime

   Appl. Sci.-Basel 8 (6), 874 (2018).

7. K. Oguri, H. Mashiko, T. Ogawa, Y. Hanada, H. Nakano, and H. Gotoh

   Sub-50-as isolated extreme ultraviolet continua generated by 1.6-cycle near-infrared pulse combined with double optical gating scheme

   Appl. Phys. Lett. 112 (18), 181105 (2018).

8. H. Mashiko, Y. Chisuga, I. Katayama, K. Oguri, H. Masuda, J. Takeda, and H. Gotoh

   Multi-petahertz electron interference in Cr:Al2O3 solid-state material

   Nat. Commun. 9, 1468 (2018).

9. T. Ota, K. Hitachi, and K. Muraki

   Landau-Zener-Stuckelberg interference in coherent charge oscillations of a one-electron double quantum dot

   Sci Rep 8, 5491 (2018).

10. G. Q. Zhang, K. Tateno, T. Sogawa, and H. Gotoh

    Diameter-tailored telecom-band luminescence in InP/InAs heterostructure nanowires grown on InP (111)B substrate with continuously-modulated diameter from microscale to nanoscale

    Nanotechnology 29 (15), 155202 (2018).

11. K. Kato, Y. Hasegawa, K. Oguri, T. Tawara, T. Nishikawa, and H. Gotoh

    Relationship between the Fano asymmetry parameter and time-domain spectra studied by time-resolved measurement of carriers and phonons in &ITp&IT-type Si

    Phys. Rev. B 97 (10), 104301 (2018).

Publications in 2017

1. T. Akatsuka, T. Takahashi, and H. Katori

   Optically guided atom interferometer tuned to magic wavelength

   Appl. Phys. Express 10 (11), 112501 (2017).

2. Y. Kunihashi, H. Sanada, Y. Tanaka, H. Gotoh, K. Onomitsu, K. Nakagawara, M. Kohda, J. Nitta, and T. Sogawa

   Drift-Induced Enhancement of Cubic Dresselhaus Spin-Orbit Interaction in a Two-Dimensional Electron Gas

   Phys. Rev. Lett. 119 (18), 187703 (2017).

3. A. Ishizawa, T. Goto, R. Kou, T. Tsuchizawa, N. Matsuda, K. Hitachi, T. Nishikawa, K. Yamada, T. Sogawa, and H. Gotoh

   Octave-spanning supercontinuum generation at telecommunications wavelengths in a precisely dispersion- and length-controlled silicon-wire waveguide with a double taper structure

   Appl. Phys. Lett. 111 (2), 021105 (2017).

4. K. Hitachi, K. Hara, O. Tadanaga, A. Ishizawa, T. Nishikawa, and H. Gotoh

   Reduced pulse energy for frequency comb offset stabilization with a dual-pitch periodically poled lithium niobate ridge waveguide

   Appl. Phys. Lett. 110 (24), 241107 (2017).

5. K. Takase, Y. Ashikawa, G. Zhang, K. Tateno, and S. Sasaki

   Highly gate-tuneable Rashba spin-orbit interaction in a gate-all-around InAs nanowire metal-oxide-semiconductor field-effect transistor

   Sci Rep 7, 930 (2017).

6. H. A. Hafez, X. Chai, Y. Sekine, M. Takamura, K. Oguri, I. Al-Naib, M. M. Dignam, H. Hibino, and T. Ozaki

   Effects of environmental conditions on the ultrafast carrier dynamics in graphene revealed by terahertz spectroscopy

   Phys. Rev. B 95 (16), 165428 (2017).

7. A. Ishizawa, R. Kou, T. Goto, T. Tsuchizawa, N. Matsuda, K. Hitachi, T. Nishikawa, K. Yamada, T. Sogawa, and H. Gotoh

   Optical nonlinearity enhancement with graphene-decorated silicon waveguides

   Sci Rep 7, 45520 (2017).

8. T. Tawara, G. Mariani, K. Shimizu, H. Omi, S. Adachi, and H. Gotoh

   Effect of isotopic purification on spectral-hole narrowing in Er-167(3+) hyperfine transitions

   Appl. Phys. Express 10 (4), 042801 (2017).

9. T. Tawara, Y. Kawakami, H. Omi, R. Kaji, S. Adachi, and H. Gotoh

   Mechanism of concentration quenching in epitaxial (ErxSc1-x)(2)O-3 thin layers

   Opt. Mater. Express 7 (3) 1097-1104 (2017).

10. A. Yokoo, M. Takiguchi, M. D. Birowosuto, K. Tateno, G. Q. Zhang, E. Kuramochi, A. Shinya, H. Taniyama, and M. Notomi

    Subwavelength Nanowire Lasers on a Silicon Photonic Crystal Operating at Telecom Wavelengths

    ACS Photonics 4 (2) 355-362 (2017).

Publications in 2016

1. H. Mashiko, K. Oguri, T. Yamaguchi, A. Suda and H. Gotoh

   Petahertz optical drive with wide-bandgap semiconductor

   Nat. Phys. 12 (8), 741-745 (2016).

2. A. Ishizawa, T. Nishikawa, T. Goto, K. Hitachi, T. Sogawa and H. Gotoh

   Ultralow-phase-noise millimetre-wave signal generator assisted with an electro-optics-modulator-based optical frequency comb

   Sci Rep. 6 24621 (2016).

3. R. Ohsugi, Y. Kunihashi, H. Sanada, M. Kohda, H. Gotoh, T. Sogawa and J. Nitta

   Bias dependence of spin injection/transport properties of a perpendicularly magnetized FePt/MgO/GaAs structure

   Appl. Phys. Express 9 (4), 043002 (2016).

4. Y. Kunihashi, H. Sanada, H. Gotoh, K. Onomitsu, M. Kohda, J. Nitta and T. Sogawa

   Drift transport of helical spin coherence with tailored spin-orbit interactions

   Nat. Commun. 7 10722 (2016).

5. K. Kato, F. Furrer and M. Murao

   Information-theoretical analysis of topological entanglement entropy and multipartite correlations

   Phys. Rev. A 93 (2), 022317 (2016).

6. M. Ono, E. Kuramochi, G. Q. Zhang, H. Sumikura, Y. Harada, D. Cox and M. Notomi

   Nanowire-nanoantenna coupled system fabricated by nanomanipulation

   Opt. Express 24 (8), 8647-8659 (2016).

7. A. Morinaga, M. Murakami, K. Nakamura, and H. Imai

   Scalar Aharonov-Bohm Phase in Ramsey Atom Interferometry under Time-Varying Potential

   Atoms 4 (3), 23 (2016).

Publications in 2015

1. G. Zhang, C. Rainville, A. Salmon, M. Takiguchi, K. Tateno and H. Gotoh

   Bridging the Gap between the Nanometer-Scale Bottom-Up and Micrometer-Scale Top-Down Approaches for Site-Defined InP/InAs Nanowires

   ACS Nano 9, 10580-10589 (2015).

2. K. Kato, K. Oguri, H. Sanada, T. Tawara, T. Sogawa and H. Gotoh

   Determination of phonon decay rate in p-type silicon under Fano resonance by measurement of coherent phonons

   AIP Adv. 5, 097152 (2015).

3. K. Hitachi, A. Ishizawa, O. Tadanaga, T. Nishikawa, H. Mashiko, T. Sogawa and H. Gotoh

   Frequency stabilization of an Er-doped fiber laser with a collinear 2f-to-3f self-referencing interferometer

   Appl. Phys. Lett. 106, 231106 (2015).

4. H. Okamoto, T. Watanabe, R. Ohta, K. Onomitsu, H. Gotoh, T. Sogawa and H. Yamaguchi

   Cavity-less on-chip optomechanics using excitonic transitions in semiconductor heterostructures

   Nat. Commun. 6, 8478 (2015).

5. S. Sasaki, K. Tateno, G. Q. Zhang, H. Pigot, Y. Harada, S. Saito, A. Fujiwara, T. Sogawa and K. Muraki

   Self-aligned gate-all-around InAs/InP core-shell nanowire field-effect transistors

   Jpn. J. Appl. Phys. 54, 04DN04 (2015).

6. H. A. Hafez, I. Al-Naib, M. M. Dignam, Y. Sekine, K. Oguri, F. Blanchard, D. G. Cooke, S. Tanaka, F. Komori, H. Hibino, and T. Ozaki

   Nonlinear terahertz field-induced carrier dynamics in photoexcited epitaxial monolayer graphene

   Phys. Rev. B 91 (3), 035422 (2015).

7. A. Najar, H. Omi, and T. Tawara

   Effect of structure and composition on optical properties of Er-Sc silicates prepared from multi-nanolayer films

   Opt. Express 23 (6) 7021-7030 (2015).

8. K. Oguri, T. Tsunoi, K. Kato, H. Nakano, T. Nishikawa, K. Tateno, T. Sogawa, and H. Gotoh

   Dynamical observation of photo-Dember effect on semi-insulating GaAs using femtosecond core-level photoelectron spectroscopy

   Appl. Phys. Express 8 (2), 022401 (2015).

9. R. Ohsugi, J. Shiogai, Y. Kunihashi, M. Kohda, H. Sanada, T. Seki, M. Mizuguchi, H. Gotoh, K. Takanashi, and J. Nitta

   Comparison of electrical and optical detection of spin injection in L1₀-FePt/MgO/GaAs hybrid structures

   J. Phys. D-Appl. Phys. 48 (16), 164003 (2015).

10. G. Q. Zhang, K. Tateno, M. D. Birowosuto, M. Notomi, T. Sogawa, and H. Gotoh

    Controlled 1.1-1.6 mu m luminescence in gold-free multi-stacked InAs/InP heterostructure nanowires

    Nanotechnology 26 (11), 115704 (2015).

Publications in 2014

1. H. Gotoh, H. Sanada, H. Yamaguchi and T. Sogawa

   Nonlinear optical spectra having characteristics of Fano interferences in coherently coupled lowest exciton biexciton states in semiconductor quantum dots

   AIP Adv. 4 (10), 107124 (2014).

2. H.A. Hafez, I. Al-Naib, K. Oguri, Y. Sekine, M.M. Dignam, A. Ibrahim, D.G. Cooke, S. Tanaka, F. Komori, H. Hibino and T. Ozaki

   Nonlinear transmission of an intense terahertz field through monolayer graphene

   AIP Adv. 4 (11), 117118 (2014).

3. K. Hitachi, A. Ishizawa, T. Nishikawa, M. Asobe and T. Sogawa

   Carrier-envelope offset locking with a 2f-to-3f self-referencing interferometer using a dual-pitch PPLN ridge waveguide

   Opt. Express 22 (2), 1629-1635 (2014).

4. T. Hoshi, N. Kashio, H. Sugiyama, H. Yokoyama, K. Kurishima, M. Ida, H. Matsuzaki and H. Gotoh

   A simple method for forming compositionally graded In_xGa_1-xAs_1-ySb_y base of double-heterojunction bipolar transistors modulating CBr₄-doping-precursor flow in metalorganic chemical vapor deposition

   Appl. Phys. Express 7 (11), 114102 (2014).

5. T. Hoshi, N. Kashio, H. Sugiyama, H. Yokoyama, K. Kurishima, M. Ida, H. Matsuzaki, M. Kohtoku and H. Gotoh

   MOCVD-grown compressively strained C-doped In_xGa_1-xAs_1-ySb_y with high-In/Sb content for very low turn-on-voltage InP-based DHBTs

   J. Cryst. Growth 404, 172-176 (2014).

6. T. Ito, H. Gotoh, M. Ichida and H. Ando

   Evaluation of hole-spin superposition in GaAs/AlGaAs quantum wells through time-resolved photoluminescence measurements

   Appl. Phys. Lett. 104 (25), 252406 (2014).

7. H. Mashiko, T. Yamaguchi, K. Oguri, A. Suda and H. Gotoh

   Characterizing inner-shell with spectral phase interferometry for direct electric-field reconstruction

   Nat. Commun. 5, 5599 (2014).

8. H. Okamoto, S. Suzuki, H. Narita, T. Tawara, K. Tateno and H. Gotoh

   Deep-level transient spectroscopy characterization of In(Ga) As quantum dots fabricated using Bi as a surfactant

   Jpn. J. Appl. Phys. 53 (6), 06JG11 (2014).

9. K. I. Sasaki, H. Gotoh and Y. Tokura

   Valley-antisymmetric potential in graphene under dynamical deformation

   Phys. Rev. B, Condens. Matter Mater. Phys. 90 (20), 205402 (2014).

10. K. Sasaki and N. Kumada

    Effects of screening on the propagation of graphene surface plasmons

    Phys. Rev. B 90 (3), 035449 (2014).

11. K. Tateno, G. Q. Zhang and H. Gotoh

    Etching effect of tertiary-butyl chloride during InP-nanowire growth

    J. Cryst. Growth 402, 299-303 (2014).

12. K. Tateno, G. Q. Zhang and H. Gotoh

    Growth of InP nanowires on graphene-covered Fe

    Jpn. J. Appl. Phys. 53 (1), 015504 (2014).

13. M. Anagnosti, H. Omi and T. Tawara

    Simultaneous light emissions from erbium-thulium silicates and oxides on silicon in the second and third telecommunications bands

    Opt. Mater. Express 4 (9), 1747-1755 (2014).

14. A. Najar, H. Omi and T. Tawara

    Scandium effect on the luminescence of Er-Sc silicates prepared from multi-nanolayer films

    Nanoscale Res. Lett. 9, 356 (2014).

15. M. D. Birowosuto, A. Yokoo, G. Q. Zhang, K. Tateno, E. Kuramochi, H. Taniyama, M. Takiguchi and M. Notomi

    Movable high-Q nanoresonators realized by semiconductor nanowires on a Si photonic crystal platform

    Nat. Mater. 13 (3), 280-286 (2014).

16. T. Hoshi, N. Kashio, H. Sugiyama, H. Yokoyama, K. Kurishima, M. Ida, H. Matsuzaki, and H. Gotoh

    A simple method for forming compositionally graded In_xGa_1-xAs_1-ySb_y base of double-heterojunction bipolar transistors modulating CBr₄-doping-precursor flow in metalorganic chemical vapor deposition

    Appl. Phys. Express 7 (11), 114102 (2014).

Publications in 2013

1. H. Gotoh, H. Sanada, H. Yamaguchi, and T. Sogawa

   Modifying exciton optical properties in quantum dots with coherent phonons induced by ultrafast optical pulses

   Appl. Phys. Lett. 103 (11), 112104 (2013).

2. Y. Hayashi, AS. Pirozhkov, M. Kando, K. Ogura, H. Kotaki, H. Kiriyama, H. Okada, H. Gotoh, and T. Nishikawa

   Xe K-shell X-ray generation using conical nozzle and 25 TW laser

   Laser Part. Beams 31 (3), 419-425 (2013).

3. H. Hideki Gotoharuki H. Sanadairoshi Yamaguchi, and Tetsuomi Sogawa

   Direct Biexciton Creation with Two-Photon Excitation for Ideal Entangled Photon Pair Emissions in Optically Active Quantum Dots,

   J. Appl. Phys. 52, 120202, (2013) .

4. K. Hitachi, A. Ishizawa, T. Nishikawa, M. Asobe, and T. Sogawa

   Periodically poled lithium niobate ridge waveguides with high conversion efficiency for 2f-to-3f self-referencing interferometer

   Electron. Lett. 49 (2), 145 (2013).

5. T. Hoshi, H. Sugiyama, H. Yokoyama, K. Kurishima, M. Ida, H. Matsuzaki, and K. Tateno

   Carbon doping in InGaAsSb films on (001) InP substrate using CBr₄ grown by metalorganic chemical vapor deposition

   J. Cryst. Growth 380, 197-204 (2013).

6. A. Ishizawa, T. Nishikawa, A. Mizutori, H. Takara, A. Takada, T. Sogawa, and M. Koga

   Phase-noise characteristics of a 25-GHz-spaced optical frequency comb based on a phase- and intensity-modulated laser

   Opt. Express 21 (24), 29186-29194 (2013).

7. H. Mashiko, K. Oguri, and T. Sogawa

   Attosecond pulse generation in carbon K-edge region (284 eV) with sub-250 mu J driving laser using generalized double optical gating method

   Appl. Phys. Lett. 102 (17), 171111 (2013).

8. H. Sanada, Y. Kunihashi, H. Gotoh, K. Onomitsu, M. Kohda, J. Nitta, PV. Santos, and T. Sogawa

   Manipulation of mobile spin coherence using magnetic-field-free electron spin resonance

   Nat. Phys. 9 (5), 280-283 (2013).

9. K. Sasaki, Y. Sekine, K. Tateno, and H. Gotoh

   Topological Raman Band in the Carbon Nanohorn

   Phys. Rev. Lett. 111 (11), 116801 (2013).

10. T. Tawara, H. Omi, T. Hozumi, R. Kaji, S. Adachi, H. Gotoh, and T. Sogawa

    Population dynamics in epitaxial Er₂O₃ thin films grown on Si(111)

    Appl. Phys. Lett. 102 (24), 241918 (2013).

11. GQ. Zhang, S. Sasaki, K. Tateno, H. Gotoh, and T. Sogawa

    Au-free InAs nanowires grown in In-particle-assisted vapor-liquid-solid mode: growth, structure, and electrical property

    AIP Adv. 3 (5), 052107 (2013).

12. H. Omi, Y. Abe, M. Anagnosti, and T. Tawara

    Mixture formation of Er_xYb_2-xSi₂O₇ and Er_xYb_2-xO₃ on Si for broadening the C-band in an optical amplifier

    AIP Adv. 3 (4), 042107 (2013).

13. H. Omi, A. Hagiwara, and T. Tawara

    Light emission from thulium silicates and oxides for optical amplifiers on silicon in the extended optical communications band

    AIP Adv. 3 (7), 072122 (2013).

14. Y. Furukawa, A. Shimada, K. Kato, H. Iwata, and K. Torimitsu

    Monitoring neural stem cell differentiation using PEDOT-PSS based MEA

    Biochim. Biophys. Acta-Gen. Subj. 1830 (9), 4329-4333 (2013).

15. S. Sasaki, K. Tateno, GQ. Zhang, H. Suominen, Y. Harada, S. Saito, A. Fujiwara, T. Sogawa, and K. Muraki

    Encapsulated gate-all-around InAs nanowire field-effect transistors

    Appl. Phys. Lett. 103 (21), 213502 (2013).

Publications in 2012

1. H. Gotoh, H. Sanada, H. Yamaguchi, and T. Sogawa

   Charged exciton creation with two-color optical excitation method and analysis of initialization process of electron spin qubit in quantum dots

   Journal Of Applied Physics 111 (12), 123520 (2012).

2. T. Hattori, A. Kubo, K. Oguri, H. Nakano, and HT. Miyazaki

   Femtosecond Laser-Excited Two-Photon Fluorescence Microscopy of Surface Plasmon Polariton

   Japanese Journal Of Applied Physics 51 (4), 04DG03 (2012).

3. K. Kato, K. Oguri, A. Ishizawa, H. Nakano, and T. Sogawa

   Ultrafast carrier and coherent phonon dynamics in semi-insulated and n-type 4H-SiC

   Journal Of Applied Physics 111 (11), 113520 (2012).

4. Y. Kunihashi, M. Kohda, H. Sanada, H. Gotoh, T. Sogawa, and J. Nitta

   Proposal of spin complementary field effect transistor

   Applied Physics Letters 100 (11), 113502 (2012).

5. K. Oguri, K. Kato, T. Nishikawa, H. Gotoh, K. Tateno, T. Sogawa, and H. Nakano

   Time-Resolved Surface Photoelectron Spectroscopy of Photoexcited Electron and Hole Dynamics on GaAs Using 92 eV Laser Harmonic Source

   Japanese Journal Of Applied Physics 51 (7), 072401 (2012).

6. K. Sasaki, K. Kato, Y. Tokura, S. Suzuki, and T. Sogawa

   Pseudospin for Raman D band in armchair graphene nanoribbons

   Physical Review B 85 (7), 075437 (2012).

7. K. Sasaki, K. Kato, Y. Tokura, S. Suzuki, and T. Sogawa

   Decay and frequency shift of both intervalley and intravalley phonons in graphene: Dirac-cone migration

   Physical Review B 86 (20), 201403 (2012).

8. T. Sogawa, H. Sanada, H. Gotoh, H. Yamaguchi, and PV. Santos

   Dynamic control of photoluminescence polarization properties in GaAs/AlAs quantum wells by surface acoustic waves

   Physical Review B 86 (3), 035311 (2012).

9. T. Sogawa, H. Sanada, H. Gotoh, H. Yamaguchi, and PV. Santos

   Spatially modulated photoluminescence properties in dynamically strained GaAs/AlAs quantum wells by surface acoustic wave

   Applied Physics Letters 100 (16), 162109 (2012).

10. K. Tateno, G. Zhang., H. Gotoh, and T. Sogawa.

    Flat-Top and Stacking-Fault-Free GaAs-Related Nanopillars Grown on Si Substrates

    Journal Of Nanotechnology (), 890607 (2012).

11. K. Tateno, GQ. Zhang, H. Gotoh, and T. Sogawa

    VLS Growth of Alternating InAsP/InP Heterostructure Nanowires for Multiple-Quantum-Dot Structures

    Nano Letters 12 (6), 28882893 (2012).

12. GQ. Zhang, K. Tateno, H. Gotoh, and T. Sogawa

    Vertically Aligned InP Nanowires Grown via the Self-Assisted Vapor-Liquid-Solid Mode

    Applied Physics Express 5 (5), 055201 (2012).

13. T. Akasaka, H. Gotoh, Y. Kobayashi, and H. Yamamoto

    Extremely Narrow Violet Photoluminescence Line from Ultrathin InN Single Quantum Well on Step-Free GaN Surface

    Advanced Materials 24 (31), 4296+ (2012).

14. J. Fiala, H. Omi, and T. Tawara

    Electroluminescence from Er³⁺ incorporated into silicon oxide thin film on silicon in a scanning tunneling microscope

    Journal Of Nanophotonics 6 (), 063503 (2012).

15. H. Omi, and T. Tawara

    Energy Transfers between Er³⁺ Ions Located at the Two Crystalographic Sites of Er₂O₃ Grown on Si(111)

    Japanese Journal Of Applied Physics 51 (2), 02BG07 (2012).

16. H. Omi, T. Tawara, and M. Tateishi

    Real-time synchrotoron radiation X-ray diffraction and abnormal temperature dependence of photoluminescence from erbium silicates on SiO₂/Si substrates

    Aip Advances 2 (1), 012141 (2012).

17. T. Watanabe, H. Okamoto, K. Onomitsu, H. Gotoh, T. Sogawa, and H. Yamaguchi

    Optomechanical photoabsorption spectroscopy of exciton states in GaAs

    Applied Physics Letters 101 (8), 082107 (2012).