title: ÐÐ»Ð°Ð·Ð¼ÐµÐ½Ð½ÑÐ¹ Ð¿Ð¾Ð»ÑÑÐ¸Ð·Ð°ÑÐ¸Ð¾Ð½Ð½Ð¾-ÑÑÐ²ÑÑÐ²Ð¸ÑÐµÐ»ÑÐ½ÑÐ¹ Ð´ÐµÑÐµÐºÑÐ¾Ñ ÑÐµÑÐ°Ð³ÐµÑÑÐ¾Ð²Ð¾Ð³Ð¾ Ð¸Ð·Ð»ÑÑÐµÐ½Ð¸Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Plasmonic Helicity-Driven Detector of Terahertz Radiation
Creators: name: ÐÐ¾ÑÐ±ÐµÐ½ÐºÐ¾, ÐÐ»ÑÑ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: Ð´ÐµÑÐµÐºÑÐ¾ÑÑ ÑÐµÑÐ°Ð³ÐµÑÑÐ¾Ð²Ð¾Ð³Ð¾ Ð¸Ð·Ð»ÑÑÐµÐ½Ð¸Ñ
Ð¿Ð¾Ð»ÑÑÐ¸Ð·Ð°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÑÐ²ÑÑÐ²Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÑ
Ð¸Ð½ÑÐµÑÑÐµÑÐ¾Ð¼ÐµÑÑÑ
Ð¿Ð»Ð°Ð·Ð¼ÐµÐ½Ð½ÑÐµ Ð²Ð¾Ð»Ð½Ñ
ÑÐ¿ÐµÐºÑÑÐ¾Ð¼ÐµÑÑÑ
detectors of terahertz radiation
helicity
interferometers
plasmonics

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description: In this work theoretical analysis of plasma detector operating in different regimes is carried out detail, including resonant mode. We consider devices based on the field effect transistor (FET). The main principle of the device operation is the following: optic signal of THz frequency excites plasma waves in the FET. The rectification of these waves caused by the device non-linearity leads to a dc voltage drop across the structure (between source and drain). The main task of this thesis is to study effects appearing due to polarization of incoming radiation. We use the hydrodynamic approach to describe plasma waves in the FET channel. The main result of this thesis is general equation for radiation-induced dc voltage which describes different operation regimes. Also we find full diagram of operating regimes in the plane (external frequency - plasma frequency). We demonstrate that in the resonant regime the response has a sharp, resonant dependence on the frequency of radiation. There are two contributions to the response: first one doesnât depend on polarization and phase shift, second one is helicity-dependent â it is harmonically depends on phase shift and changes sign with changing sign of circular polarization. We show that two contributions have different dependence on the frequency: first part is a usual Lorenz peak, and second has asymmetric dependence on frequency in vicinity of the resonance. The obtained results can be used for creating of helisity-driven teraherz detectors and interferometers.