Publications

1. I. Kasai, I. Takagi, and K. G. Nakamura:Phonon dynamics of a bulk WSe2 crystal excited by ultrashort near-infrared pulses,  (arXiv:2502.18799, DOI:10.48550/arXiv.2502.18799)

1. I. Takagi, Y. Konno, Y. Kayanuma, and K. G. Nakamura: Dual  role of longitudinal optical phonons for generation of coherent oscilaations in gallium arsenide, Phys. Rev. B 110, 024314 (2024). (Editor's Suggestion) DOI: 10.1103/PhysRevB.110.024314.  (Preprint: arXiv:2405.07159, DOI:10.48550/arXiv.2405.07159)

2.  K. G. Nakamura and I. Takagi: Quantum coherence in electron-phonon couples state in a semicondtor crystal, Progress in Ultrafast Intense Laser Science XVII, Topics in Applied Physics col. 151, eds. by K. Yamanouchi, L. F. DiMauro, W. T. Hill, III (Springer), Chapter 5, pp. 101-117 (2024). DOI: 10.1007/978-3-031-55463-6_5

3. S. Nekita, S. Yanagimoto, T. Sannomiya, K. Akiba, M. Takiguchi, H. Sumikura, I. Takagi, K. G. Nakamura, S. Yip, Y. Menhg, J. C. Ho, T. Okuyama, M. Murayama, and H. Sato: Diffution dominated luminescence dynamics of CsPbBr3 studied using cathodoluminescence and micro-photoluminescence spectroscopy, Nano Lett., (2024). DOI:10.1021/acs.nanolett.4c00483.

1. T. Kimata, T. Kato, I. Takagi, Y. Konno, H. Okazaki, S. Yamamoto, T. Yamaki, and K. G. Nakamura: 380-keV Ar+  irradiation effcets on optical phonons in graphite studied with transient reflection measurement. J. Appl. Phys., 134, 135306 (2023).

2. I. Takagi, Y. Kayanuma, and K. G. Nakamura: Stimulated Raman blockade in coherent phonon generation, Solid State Commun., 373-374, 115316 (2023). DOI: https://doi.org/10.1016/j.ssc.2023.115316.

3. I. Takagi, Y. Kayanuma, and K. G. Nakamura: Ultrafast quantum path interferometry to determine the electronic decoherence time of the electron-phonon coupled system in n-type gallium arsenide, Phys. Rev. B, 107, 184305 (2023)., (Erratum) Phys. Rev. B, 108, 219903(E) (2023).

4. Y. Furusho, R. Yagi, M. Suda, I. Takagi, T. Maruhashi, Y. Kayanuma, F. Minami, and K. G. Nakamura: Ultrafast quantum-path interferometry of photo-absorption involving excitons in a GaAs multiple-quantum-well structure, Solid State Commun., 360, 115056, (2023).

5. I. Takagi, T. Kimata, Y. Konno, and K. G. Nakamura: Coherent optical phonons in glassy carbon, Carbon, 204, 191-195, (2023).

6. I. Takagi, and K. G. Nakamura: The influence of initial phonon states on the generation of coherent optical phonons, Solid State Commun., 360, 115053, (2023).

1. I. Takagi, T. Kato, Y. Kayanuma, and K. G. Nakamura: Interference of optical phonons in diamond studied using femtosecond pulses of polarized near-infrared light, Solid State Commun., 350, 114747, (2022).

2. J. Yu, Y. Han, H. Zhang, O. V. Misochko, K. G. Nakamura, and J. Hu: Attosecond-resolved coherent control of lattice vibrations in thermoelectric SnSe, J. Phys. Chem. Lett., 13, 2584-2590 (2022).

3. Y. Han, J. Yu, H. Zhang, F. Zu, K. Peng, X. Zhou, L. Qiao, O. V. Misochko, K. G. Nakamura, G. M. Vanacore, and J. Hu: Photoinduced ultrafast symmetry switch in SnSe, J. Phys. Chem. Lett., 13, 442-448 (2022).

1. I. Takagi, Y. Kayanuma, and K. G. Nakamura: Theory for coherent control of longitudinal optical phonons in GaAs using polarized optical pulses with relative phase locking, Phys. Rev. B 104, 134201 (2021)., (Erratum) Phys. Rev. B 108, 179901(E) (2023).

2. H. Matsumoto, T. Kitashima, T. Maruhashi, I. Takagi, Y. Kayanuma, and K. G. Nakamura: Coherent control of optical phonons in GaAs by relative-phase-locked optical pulses under perpendicular polarized conditions, Solid State Commun., 327, 114215 (2021).

1. T. Kimata, K. Yoda, H. Matsumoto, H. Tanabe, F. Minami, Y. Kayanuma, and K. G. Nakamura: Coherent control of 40-THz optical phonons in diamond using femtosecond optical pulses, Phys. Rev. B 101, 174301 (2020). DOI: 10.1103/PhysRevB.101.174301; (Erratum) Phys. Rev. B 102, 179903( E) (2020). DOI: 10.1103/PhysRevB.102.179903.

2. T. Kimata, K. Kakitani, S. Yamamoto, T. Yamaki, T. Terai, and K. G. Nakamura: Platinum nanoparticles on HOPG surface modified by 380 keV Ar+ irradiation: TEM and Raman studies, Radiation Effects and Defects in Solids 175, 433-439 (2020). DOI: 10.1080/10420150.2020.1737866

Google scholar: Kazutaka G. Nakamura