Open AccessMiddle- and far-infrared detector based on the plane collection of graphene strips
Author(s) -
S. A. Maksimenko,
Antonio Maffucci,
M. E. Portnoi,
V. A. Saroka,
G. Ya. Slepyan
Publication year - 2021
Publication title -
doklady nacionalʹnoj akademii nauk belarusi
Language(s) - English
Resource type - Journals
eISSN - 2524-2431
pISSN - 1561-8323
DOI - 10.29235/1561-8323-2021-65-6-661-667
Subject(s) - strips , detector , graphene , planar , optics , plasmon , antenna (radio) , signal (programming language) , far infrared , surface plasmon polariton , optoelectronics , physics , infrared , materials science , surface plasmon , computer science , telecommunications , nanotechnology , computer graphics (images) , composite material , programming language
A concept of a middle- and far-infrared detector has been proposed. The detector is built as a planar collection of parallel graphene strips of different length and width. The feature of the detector scheme is the concurrent utilization of two different detection mechanisms: excitation in the given frequency range of low-frequency interband transitions inherent in armchair graphene strips and antenna resonances of strongly slowed-down surface waves (plasmon polaritons). It has been shown that matching these two resonances results in the essential detector signal amplification, thus providing an alternative way how to solve the problem of the low efficiency of resonant graphene antennas. An approach is proposed to analyze the design of such detectors, as well as to discuss the ways of tuning the both mechanisms.