System and Method for Modulating Terahertz Pulse using Topological Insulator

摘要

The present invention relates to a method of controlling a plasmonic reaction of an electron generated in a terahertz region by irradiating a micro-ribbon array of a phase insulator material with an ultrafast optical pulse having a wavelength shorter than that of a terahertz wave, The present invention relates to a Hertz pulse modulating apparatus and method, and more particularly, to a Hertz pulse modulating apparatus and method, which includes a microwave modulated optical pulse irradiating unit for applying microwave optical pulses, a terahertz pulse irradiating unit for irradiating terahertz pulses, A terahertz receiver coupled to the terahertz pulse to control a plasmon response to cause spectral modulation of the terahertz pulse, the terahertz receiver receiving the terahertz pulse modulated by the phase insulator micro ribbon array, The phase insulator microphone The modulation depth of the terahertz pulse modulated by the ribbon array is determined by the ratio of the extinction spectrum before and after the light excitation, and the smaller the extinction coefficient when there is no light excitation, The larger the extinction coefficient, the larger the value.