Variable THz Attenuator Based On 5BDSR Microparticles In Synthetic 80W-90 OilPoster (MATL-P1)
Tue, 10 Nov 2020 01:15am to 03:00am
The prototype of the variable THz attenuator based on magnetophoretic driven 0.5 wt% 5BDSR microparticles solution of highly viscous 80W-90 synthetic oil is presented. Two pairs of Helmholtz coils are used as a source of an external magnetic field that possesses to drive the ferrofluid in a real-time. Dependence of the transmittance on particle orientation was studied in the range 0.2-2 THz using a custom made THz-TDS. Ferrofluid solution in a standard 1 cm length quartz cuvette possesses extinction ratio up to 20:1 at 1.4 THz. The prospects for their use for THz photonics are discussed.
Download Abstract: abstract_ezhov_irmmw-20.pdf
Authors: Ezhov, Dmitry; Kochnev, Zakhar; Savelyev, Egor; Cherepanov, Victor; Mamrashev, Alexander; Nikolaev, Nazar; Svetlichnyi, Valery
Institute of Automation and Electrometry SB RAS, Tomsk State University