66 research outputs found
Terahertz Optomagnetism:Nonlinear THz Excitation of GHz Spin Waves in Antiferromagnetic FeBO3
A nearly single cycle intense terahertz (THz) pulse with peak electric and magnetic fields of 0.5 MV/cm and 0.16 T, respectively, excites both modes of spin resonances in the weak antiferromagnet FeBO3. The high frequency quasiantiferromagnetic mode is excited resonantly and its amplitude scales linearly with the strength of the THz magnetic field, whereas the low frequency quasiferromagnetic mode is excited via a nonlinear mechanism that scales quadratically with the strength of the THz electric field and can be regarded as a THz inverse Cotton-Mouton effect. THz optomagnetism is shown to be more energy efficient than similar effects reported previously for the near-infrared spectral range
All-Union Scientific Conference on Shielding Against Ionizing Radiations from Nuclear-Industrial Installations
Induced activity in the ?-ray field of activation products in the decommissioned MIFI IRT reactor
- …