| The "Superconducting - laser" interdisciplinary field studied in this paper is during the early construction phase in worldwide, and its importance attract extensive attention of many scholars, so this field has an extremely broad prospects. As the interdisciplinary field, wide knowledge imformation and integrated innovation are its main features. To maintain the continued research and promotion of this interdisciplinary field, the three related major sub-studies include:1) The research of high temperature superconducting thin film devices and systems;2) The research of high-temperature superconducting thin films laser chemical properties;3) The research of high temperature superconducting thin film laser irradiation properties.The construction of "Superconducting - laser" in interdisciplinary field is the final target. In order to maintain the stable and continuing research in long-term, the experimental and theoretical research on high-temperature superconducting thin film devices and systems, photochemical properties and light irradiation properties are focused in this paper, which lay a good foundation for sustainable development.The performance of YBCO high-temperature superconducting microwave thin film devices, such as diplexers, multiplexers, etc., is much higher than conventional microwave devices because of the superior surface resistance performance of YBCO superconducting thin films in low temperature; The use of high brightness, good monochromaticity and directivity of laser in YBCO thin films laser assisted chemical etching technology, making it has the advantages of both dry plasma etching and wet chemical etching, their results will be more suitable for the batch processing of YBCO film etching; YBCO thin film light response devices, such as light-controlled high-temperature superconducting switch, attenuator, and other devices, etc., have special applications in many areas, because, in optical performance, the band gap of YBCO thin film is at least about two orders of magnitude narrower than the general semiconductor photovoltaic material, and the YBCO film has a high optical absorption coefficient. For this reason, high-temperature superconducting thin film device's fabrication technology, etching technology, and studies of photon response properties have become hot spots researched by domestic and foreign scholars, but there are many problems still have not been effectively resolved.This work is focus on high-temperature superconducting thin film device's fabrication technology, etching technology, and photon response properties. The main research findings are:The main line is the performance research of high-temperature superconduct- ing thin film. In order to achieve its application, four levels are studied including further development of basic principles, monitoring methods, processing technology and device production, for building a comprehensive and sustainable research system around the high-temperature superconducting thin films and its related subject characteristics.The researches on YBCO high-temperature superconducting thin film devices, photochemical and optical radiation characteristics are typical cross-disciplinary topics, the base of which is high temperature superconducting thin film technology, the related areas including chemical, laser and many other fields. Because of the complex background, there are many pressing problem at this stage on the studied fields of YBCO high-temperature superconducting thin film devices, photochemical and optical radiation characteristics. Due to the links between various aspects, independent study is difficult to achieve the purpose of promoting the practical application. In order to maintain long-term sustainable research, this building of research system is selected as the starting point, and the works in all aspects are actively studied for the foundation of comprehensive and long-term study, which becomes one of the main features of this paper.The innovations are listed as follows:1) The proposed new structure and new methods include low etching error impaction structure, uniting a high temperature superconductor generalized Chebyshev lowpass filter and a highpass filter, and the high temperature superconducting devices with limiting and self-protective abilities. The related simulation, production and testing technology of high temperature superconductor resonator, filter, diplexer, receiver front-end and so on are studied.The depth simulation and experimental work on the high-temperature superconducting resonator, onboard high-temperature superconducting filter, a low etching error image HTS filter, onboard high- temperature superconducting microwave diplexers, high-temperature superconducting narrow-band generalized Chebyshev function filter, and high-temperature super- conducting receiver front-end with limiting and self-protective abilities have done.2) The high-temperature superconducting YBCO thin films laser-assisted chemical etching method is proposed, and the surface changed characteristics, infrared, temperature characteristics in the process of laser chemical etching are studied.At present, high-temperature superconducting etching techniques include dry etching, ion beam etching and wet chemical etching, but these etching techniques have certain disadvantages, and there is certain influence on the late production of high-temperature superconducting devices. The laser induced aqueous etching technology, infrared characteristics and temperature characteristics of high temperature superconductor thin films are studied in this thesis.3) The startup time of YBCO high temperature superconductor thin films'reaction (the interval between the moment etched materials contacting corrosion solution and the starting moment of reaction) and the real-time measurement of the YBCO film roughness under liquid layer are proposed and experimentally studied. Valuable results are obtained.The etching rate has been increased in order to overcome the defects such as lateral corrosion. With the continuous improvement of etching rate, the demanding of control precision of the time become increasingly. The existence of chemical reaction starting time length has great influence on the time controlling of fast etching, and can't be ignored. In addition, the surface roughness is a important parameter to judge the technical of YBCO superconducting thin films etching. But the YBCO films always below the liquid layer in wet etching process, so it is difficult to achieve the Real-time monitoring of surface roughness in wet etching process. The non-contact and real-time methods of monitoring surface roughness which have been reported can not be used in the real-time monitoring of the changes of surface roughness under the liquid layer, which greatly restrict the YBCO high-temperature superconducting thin film wet etching technology research and development. The chemical reaction starting time length and the real-time monitoring method of surface roughness under the liquid layer are both studied in this thesis. 4) A light-controlled high-temperature superconducting attenuator is proposed, designed, produced and tested, the light response characteristics of which are also studied and accessing many valuable results.This thesis proposes a new light controlled high-temperature superconducting microwave variable attenuator for satellite communication. Both the design process and the test results are analyzed. The attenuator has excellent attenuation performance by using the very low microwave surface resistance and excellent response characteristics of high-temperature superconducting thin films in liquid nitrogen temperature. In addition, the recovery duration time of non-equilibrium optical response, non-equilibrium response characteristics, optical response and memory effects of YBCO high temperature superconducting microstrip are studied.As far as I know, there still have no reports about the infrared measurement method of YBCO film reaction starting time length, the real-time characterization of surface roughness of YBCO film under liquid layer, high-temperature superconducting attenuator, YBCO high-temperature superconducting thin film laser assisted etching method, infrared characteristics and current changes characteristics in YBCO thin film etching process and so on in the domestic and foreign articles. |
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