Zobrazeno 1 - 10
of 596
pro vyhledávání: '"Kida N"'
Autor:
Yamaguchi, T., Iwano, K., Miyamoto, T., Takamura, N., Kida, N., Takahashi, Y., Hasegawa, T., Okamoto, H.
Publikováno v:
Phys. Rev. B 103, 045124 (2021)
We have applied a many-body Wannier functions method to theoretically calculate an excitonic optical conductivity spectrum and energy structure in a one-dimensional (1D) Mott insulator at absolute zero temperature with large system size. Focusing on
Externí odkaz:
http://arxiv.org/abs/2006.09004
Publikováno v:
AIP Advances 10 (2020) 025311
We report a newly designed mid-infrared-pump visible-probe measurement system, which can measure phase-sensitive responses to a mid-infrared pulse along the oscillating electromagnetic field. In this system, the pump light is a phase-locked mid-infra
Externí odkaz:
http://arxiv.org/abs/1909.01641
Autor:
Yamaguchi, T., Asada, K., Yamakawa, H., Miyamoto, T., Iwano, K., Nakamura, T., Kida, N., Okamoto, H.
Publikováno v:
Phys. Rev. B 99, 245104 (2019)
We theoretically revealed that a weak photoexcitation achieves the electric polarization-inversion with approximately $18\%$ of all the charges, which was interpreted as a superimposition of multi-exciton states, from the charge-ordered ferroelectric
Externí odkaz:
http://arxiv.org/abs/1901.08322
Publikováno v:
Phys. Rev. A 98, 013843 (2018)
We observe a terahertz radiation from a hydrogen-bonded organic molecular ferroelectric 5,6-dichloro-2-methylbenzimidazole excited by a femtosecond laser pulse at room temperature. The emitted terahertz wave consists of three oscillatory components,
Externí odkaz:
http://arxiv.org/abs/1803.10377
Autor:
Kida, N., Tonouchi, M.
Using a spatiotemporal terahertz radiation imaging technique, we visualize photogenerated metallic inhomogeneity in the charge-ordered insulating phase of Pr$_{0.7}$Ca$_{0.3}$MnO$_3$ thin film. We reveal that photogenerated metallic regions with micr
Externí odkaz:
http://arxiv.org/abs/1412.2836
We demonstrate a new method to detect ferroelectric domains in inside and surface regions of organic ferroelectrics by mapping out two orthogonally polarized terahertz waves radiated from the crystal upon the irradiation of near-infrared femtosecond
Externí odkaz:
http://arxiv.org/abs/1412.2833
Polarization control of terahertz wave is a challenging subject in terahertz science and technology. Here, we report a simple method to control polarization state of the terahertz wave in terahertz generation process. At room temperature, terahertz r
Externí odkaz:
http://arxiv.org/abs/1412.2835
Autor:
Guan, W., Kida, N., Sotome, M., Kinoshita, Y., Takeda, R., Inoue, A., Horiuchi, S., Okamoto, H.
Publikováno v:
Jpn. J. Appl. Phys. 53, 09PD07 (2014); Special issue on "Ferroelectric Materials and Their Applications"
Terahertz radiation by optical rectification has been observed at room temperature in a hydrogen-bonded organic molecular ferroelectric crystal, 2-phenyl malondialdehyde (PhMDA). The radiated electromagnetic wave consisted of a single-cycle terahertz
Externí odkaz:
http://arxiv.org/abs/1409.2958
Publikováno v:
Jpn. J. Appl. Phys. 53, 09PD08 (2014); Special issue on "Ferroelectric Materials and Their Applications"
We report on the emission of terahertz radiation by irradiation of femtosecond laser pulses in non-centrosymmetric paraelectric and ferroelectric phases of Co$_3$B$_7$O$_{13}$I boracite. The Generation of the terahertz waves in both phases is caused
Externí odkaz:
http://arxiv.org/abs/1409.2960
Publikováno v:
Phys. Rev. A 90, 033842 (2014) (15 pages)
We report on the observation of terahertz radiation in a non-centrosymmetric insulating oxide, paratellurite ($\alpha$-TeO$_2$) by irradiation of a femtosecond laser pulse at room temperature. In the power spectrum of the terahertz radiation, an inte
Externí odkaz:
http://arxiv.org/abs/1407.7323