Zobrazeno 1 - 10
of 244
pro vyhledávání: '"Otobe, T."'
Autor:
Otobe, T., Venkat, P.
We studied the excitation process of silicon under an intense double pulse. We employed the three-temperature (electron, hole, and lattice) model (3TM) together with Maxwell's equations. We solved Maxwell's equations by the finite-difference time-dom
Externí odkaz:
http://arxiv.org/abs/2206.10807
Autor:
Otobe, T.
Publikováno v:
Phys. Rev. Applied 13, 024062 (2020)
We report a first-principle calculation for the wavelength-dependence of a laser excitation process on a silicon surface.
Externí odkaz:
http://arxiv.org/abs/1912.08424
Autor:
Otobe, T.
Publikováno v:
Phys. Rev. A 100, 033401 (2019)
An ultrafast anisotropic electro-optic effect of the zinc sulfide crystal is predicted employing a numerical pump-probe simulation. The numerical results indicate that the time-dependence of the anisotropic response of ZnS exhibits a phase shift with
Externí odkaz:
http://arxiv.org/abs/1902.09351
Autor:
Otobe, T.
Publikováno v:
Phys. Rev. B 96, 235115 (2017)
Analytical formulation of sub-cycle modulation (SCM) of dielectrics including electron excitation is presented. The SCM is sensitive to not only the time-resolved dynamical Franz-Keldysh effect (Tr-DFKE) [T. Otobe, et al., Phys. Rev. B 93, 045124 (20
Externí odkaz:
http://arxiv.org/abs/1707.07462
We calculate the electron excitation in cubic silicon carbide (3C-SiC) caused by the intense femtosecond laser double pulses using time-dependent density functional theory (TDDFT). We assume the electron distributions in the valence band (VB) and the
Externí odkaz:
http://arxiv.org/abs/1707.06758
We report a Keldysh-like model for the electron transition rate in dielectrics under an intense circularly polarized laser. We assume a parabolic two-band system and the Houston function as the time-dependent wave function of the valence and conducti
Externí odkaz:
http://arxiv.org/abs/1612.06555
Autor:
Uchida, K., Otobe, T., Mochizuki, T., Kim, C., Yoshita, M., Akiyama, H., Pfeiffer, L. N., West, K. W., Tanaka, K., Hirori, H.
Publikováno v:
Phys. Rev. Lett. 117, 277402 (2016)
The coherent interaction of light with matter imprints the phase information of the light field on the wavefunction of the photon-dressed electronic state. Driving electric field, together with a stable phase that is associated with the optical probe
Externí odkaz:
http://arxiv.org/abs/1611.07128
Autor:
Otobe, T.
The analytical formula for the time-resolved dynamical Franz-Keldysh effect (Tr-DFKE) under an elliptically polarized laser in sub-femtosecond time-scale is reported. The Houston function is assumed as the time-dependent wave function of the paraboli
Externí odkaz:
http://arxiv.org/abs/1609.07280
Autor:
Otobe, T.
Publikováno v:
Phys. Rev. B 94, 235152 (2016)
A calculation of the high-harmonic generation (HHG) in $\alpha$-quartz using the time-dependent density functional theory is reported. The inter-band process is attributed to the dominant in HHG above the band gap. The photon energy is set to 1.55 eV
Externí odkaz:
http://arxiv.org/abs/1607.00747
Autor:
Otobe, T.
We report here the analytical formula for the time-resolved dynamical Franz-Keldysh effect (Tr-DFKE) under circularly polarized light. We assume the Houston function as the time-dependent wave function of the parabolic two-band system. Our formula sh
Externí odkaz:
http://arxiv.org/abs/1605.09086