• Photonics Research
  • Vol. 7, Issue 3, 325 (2019)
Qianyi Mu1, Fei Fan1,2,3,*, Sai Chen4, Shitong Xu1..., Chuanzhong Xiong1, Xin Zhang1, Xianghui Wang1 and Shengjiang Chang1,2,5|Show fewer author(s)
Author Affiliations
  • 1Institute of Modern Optics, Nankai University, Tianjin 300350, China
  • 2Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, Tianjin 300350, China
  • 3State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
  • 4Nanophotonics and Optoelectronics Research Center, Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China
  • 5e-mail: sjchang@nankai.edu.cn
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    DOI: 10.1364/PRJ.7.000325 Cite this Article Set citation alerts
    Qianyi Mu, Fei Fan, Sai Chen, Shitong Xu, Chuanzhong Xiong, Xin Zhang, Xianghui Wang, Shengjiang Chang, "Tunable magneto-optical polarization device for terahertz waves based on InSb and its plasmonic structure," Photonics Res. 7, 325 (2019) Copy Citation Text show less
    (a) Simulative carrier density of InSb at different temperatures; maps of the real part of (b) εL and (c) εR of longitudinally magnetized InSb in the THz regime under different magnetic fields from 0 T to 0.2 T; maps of theoretical transmittance (d) IL and (e) IR of longitudinally magnetized InSb in the THz regime under different magnetic fields from 0 T to 0.2 T; (f) map of the theoretical transmittance difference between the LCP and the RCP (IL−IR).
    Fig. 1. (a) Simulative carrier density of InSb at different temperatures; maps of the real part of (b) εL and (c) εR of longitudinally magnetized InSb in the THz regime under different magnetic fields from 0 T to 0.2 T; maps of theoretical transmittance (d) IL and (e) IR of longitudinally magnetized InSb in the THz regime under different magnetic fields from 0 T to 0.2 T; (f) map of the theoretical transmittance difference between the LCP and the RCP (ILIR).
    (a) Schematic diagram of experimental THz-MOS system; (b) photo of the experimental equipment.
    Fig. 2. (a) Schematic diagram of experimental THz-MOS system; (b) photo of the experimental equipment.
    Experimental and simulated results of InSb with different temperatures: (a) measured THz time domain pulses; (b) experimental intensity transmission expressed in dB; (c) simulated carrier density N and cutting frequency fc; (d) simulated transmission.
    Fig. 3. Experimental and simulated results of InSb with different temperatures: (a) measured THz time domain pulses; (b) experimental intensity transmission expressed in dB; (c) simulated carrier density N and cutting frequency fc; (d) simulated transmission.
    Experimental results of InSb under magnetic field: (a) schematic diagram of the experimental configuration; (b) experimental time domain pulses in two orthogonal directions under magnetic fields of 150 mT and 0 mT; (c) experimental transmission of LCP and RCP components; (d) experimental Faraday rotation angles under different magnetic fields.
    Fig. 4. Experimental results of InSb under magnetic field: (a) schematic diagram of the experimental configuration; (b) experimental time domain pulses in two orthogonal directions under magnetic fields of 150 mT and 0 mT; (c) experimental transmission of LCP and RCP components; (d) experimental Faraday rotation angles under different magnetic fields.
    Polarization state vectors of the transmitted THz wave through InSb when the input wave is an LP light: polarization state at (a) 0.7 THz and (b) 1.1 THz under different magnetic fields; polarization state under (c) 0.13 T and (d) 0.17 T at different frequencies.
    Fig. 5. Polarization state vectors of the transmitted THz wave through InSb when the input wave is an LP light: polarization state at (a) 0.7 THz and (b) 1.1 THz under different magnetic fields; polarization state under (c) 0.13 T and (d) 0.17 T at different frequencies.
    (a) 3D schematic diagram of the InSb plasmonics in the experimental configuration; microscope image of grating 1 and grating 2; (b) side view of InSb plasmonics.
    Fig. 6. (a) 3D schematic diagram of the InSb plasmonics in the experimental configuration; microscope image of grating 1 and grating 2; (b) side view of InSb plasmonics.
    Experimental results of the InSb plasmonics: (a) measured y-LP THz pulses under different magnetic fields; (b) THz pulses under forward and backward magnetic fields of 150 mT; (c) amplitude transmission spectra under different magnetic fields; (d) spectra of the extinction ratio.
    Fig. 7. Experimental results of the InSb plasmonics: (a) measured y-LP THz pulses under different magnetic fields; (b) THz pulses under forward and backward magnetic fields of 150 mT; (c) amplitude transmission spectra under different magnetic fields; (d) spectra of the extinction ratio.
    Qianyi Mu, Fei Fan, Sai Chen, Shitong Xu, Chuanzhong Xiong, Xin Zhang, Xianghui Wang, Shengjiang Chang, "Tunable magneto-optical polarization device for terahertz waves based on InSb and its plasmonic structure," Photonics Res. 7, 325 (2019)
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