Metamaterials Terahertz Dynamic Functional Devices

"Terahertz"is first proposed by Fleming for description the frequency range of Michelson interferometer, Terahertz (THz) wave generally refers to the electromagnetic radiation with the frequency of 100GHz-10THz(3mm-30μm wavelength). The frequency range is in the cross area of electronics and photonics. In the past long time, for the lack of wave sources and the effective detection methods, Relative to the rapid development of microwave and optical technology, The progress of terahertz research is rather slowly, which is only the not fully development and utilization band in the electromagnetic spectrum. Due to its special position in electromagnetic spectrum, Thz wave displays a series of special properties different from other electromagnetic radiation, making it has wide application prospects. Its academic value and application prospect already attracted worldwide attention, and also become one of the hot fields of scientific research In the 21st century. At present, a hot stream of THz scientific and technological research formed all of the world, THz science and technology develops rapidly, and new artificial electromagnetic THz material is one of the most promising directions.New artificial electromagnetic materials (Metamaterials) is a kind of subwavelength unit arranged by periodic or not, This artificial electromagnetic media through designing the dielectric constant and magnetic permeability (including to a negative value) to control the mode of transmission of electromagnetic waves, obtaining a variety of unique properties that the natural existence material doesn't have, such as negative refraction, perfect transmission, stealth coat, etc. Currently, the new artificial magnetic materials have been achieved in the terahertz frequency band, and showed superior performance, considered one of the most promising material to fill the terahertz"gap", In recent years, the correlation research of THz Metamaterials Gradually become a hot , Promoting the development and application of terahertz dynamic function device. The following results have been achieved in this thesis: First, From the perspective of the equivalent circuit, we design the THz dynamic blue shift device, the structure optimization and characteristics were analyzed by the electromagnetic simulation software CST. on this basis, we discuss the geometric structure Parameters, substrate materials on the influence of resonant characteristics, the influence law may be have great value of reference, finally the designing methods of dynamic device was summarizedSecond, analysis the phase change materials vanadium dioxide which is required in dynamic components , Studying the materials phase change performance in different laser power illuminated, this work has great reference value for material selection in terahertz dynamic function design.Third, exploring the THz Matematerials Processing technology , Summarizes the influence to Metamaterials in processing and the the compatibility problems between various material.