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Terahertz wire-grid circular polarizer tuned by lock-in detection method For our magneto-optical measurements we designed and successfully tested a broadband-tunable terahertz circular polarizer employable with our far-infrared/THz laser source working in the range of 0.25–7.5 THz. This unique experimental setup allows us to measure cyclotron resonance of electrons (in semiconductors) and vortices (in superconductors). Terahertz wire-grid circular polarizer tuned by lock-in detection method R. Tesař, M. Šindler, J. Koláček, L. Skrbek REVIEW OF SCIENTIFIC INSTRUMENTS 89, 083114 (2018)
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