Investigation Of Two-dimensional Plasmons In Grating-gated AlGaN/GaN Heterostructures With Terahertz Time Domain Spectrometer

Poster (MATL-P4)

Thu, 12 Nov 2020 01:15am to 03:00am

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Two-dimensional (2D) plasmons in grating-gated AlGaN/GaN heterostructures were investigated by terahertz time domain spectroscopy observing the distinctive minima and inflection points in the transmission amplitude and phase spectra, respectively. The main features of 2D plasmons at temperature of 80 K were the fundamental mode position at 2.2 THz (grating period of 600 nm, filling 50 %), the quality factor up to 8 and the modulation of transmission amplitude and phase up to 50 % and 18 deg, respectively (period 1000 nm, filling 80 %).

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Presenters and Authors Info

Presenter: Anonymous

Authors: Pashnev, Daniil; Kaplas, Tommi; Korotyeyev, Vadym; Janonis, Vytautas; Grigelionis, Ignas; Urbanowicz, Andrzej; Jorudas, Justinas; Indrisiunas, Simonas; Alexeeva, Natalia; Kasalynas, Irmantas

Center for Physical Sciences and Technology