30 citations · 69 across the 7 of their papers we have counts for
7 papers
Sublattice-selective inverse Faraday effect in ferrimagnetic rare-earth iron garnet
Toshiki Hiraoka, Ryo Kainuma, Keita Matsumoto +2
We performed time-resolved pump--probe measurements using rare-earth iron garnet \ce{Gd3/2Yb1/2BiFe5O12} as a two-sublattice ferrimagnet. We measured the initial phases of the magn…
Sub-millimeter propagation of antiferromagnetic magnons via magnon-photon coupling
Ryo Kainuma, Keita Matsumoto, Toshimitsu Ito +1
For the realization of magnon-based current-free technologies, referred to as magnonics, all-optical control of magnons is an important technique for both fundamental research and…
Fast acquisition of spin-wave dispersion by compressed sensing
Ryo Kainuma, Keita Matsumoto, Takuya Satoh
For the realization of magnonic devices, spin-wave dispersions need to be identified. Recently, the time-resolved pump-probe imaging method combined with the Fourier transform was…
Selective imaging of terahertz electric field of phonon-polariton in LiNbO
Keita Matsumoto, Takuya Satoh
Coherent phonon-polaritons have attracted a considerable amount of interest owing to their relevance to nonlinear optics and terahertz (THz)-wave emissions. Therefore, it is import…
Observation of evanescent spin waves in the magnetic dipole regime
Keita Matsumoto, Isao Yoshimine, Kosei Himeno +2
We observed spin-wave transmission through an air gap that works as a prohibited region. The spin waves were excited by circularly polarized pump pulses via the inverse Faraday eff…
Ultrafast Light-driven Simultaneous Excitation of Coherent Terahertz Magnons and Phonons in Multiferroic BiFeO
Pritam Khan, Masataka Kanamaru, Keita Matsumoto +2
The ultrafast switching of magnetization in multiferroic materials by a femtosecond laser could provide various advantages in photonics and magnonics. An efficient approach to cont…
Optical determination of the exchange stiffness constant in an iron garnet
Keita Matsumoto, Thomas Brächer, Philipp Pirro +7
Brillouin light scattering measurements were performed in the backscattering geometry on a Bi-substituted rare earth iron garnet. We observed two different peaks, one attributed to…