Anhua WU, Xiangyang ZHAO, Jiamin SHANG, Hui SHEN, Liangbi SU. Terahertz optical modulation research of rare-earth ferrite crystals[J]. Chinese Journal of Quantum Electronics, 2023, 40(3): 293
- Chinese Journal of Quantum Electronics
- Vol. 40, Issue 3, 293 (2023)
Fig. 1. Position of THz waves in the frequency spectrum
![(a) Illustration showing the dynamics of magnetic moment. The magnetic moment is tilted within y-z plane by the impulsive magnetic field along x axis (blue arrow), and begins precession motion around z axis; (b) Ordering of Fe3+ magnetic moments in YFeO3[12]](/richHtml/lzdz/2023/40/3/293/img_02.jpg)
Fig. 2. (a) Illustration showing the dynamics of magnetic moment. The magnetic moment is tilted within y-z plane by the impulsive magnetic field along x axis (blue arrow), and begins precession motion around z axis; (b) Ordering of Fe3+ magnetic moments in YFeO3[12]
![(a) Magnetization temperature dependence of Sm0.4Er0.6FeO3 single crystal in the applied field H=100 Oe along the a-axis and c-axis[26]; (b) Temperature dependence of resonance amplitude and frequency[26]](/Images/icon/loading.gif){kind=icon}
Fig. 3. (a) Magnetization temperature dependence of Sm0.4Er0.6FeO3 single crystal in the applied field H=100 Oe along the a-axis and c-axis[26]; (b) Temperature dependence of resonance amplitude and frequency[26]
Fig. 4. Spin control of TmFeO3 by a terahertz-induced anisotropy torque [31]. (a) The ground state of Tm3＋;(b) Ultrafast transitions between energy levels of Tm3＋ induced by terahertz pulses
Fig. 5. Antenna-enhanced THz spin dynamics [32]. (a) Schematic of the gold bowtie antenna on TmFeO3; (b) Real incident THz waveform; (c) Experimentally detected polarization rotation signal as a function of the delay time t
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