| 1. | The basic condition that produced superradiance and the radiation power were gotten
推导出产生超辐射机理的基本条件，并得到了微波辐射功率的解析表达式。
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| 2. | With the theory analysis of the superradiance mechanism its condition that occurs from the . foundation . can be understood clearly
通过理论研究，能较深刻的解释其发生的条件和物理意义并对实验有一定的指导作用。
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| 3. | In the first chapter , the high power microwave device development process was reviewed , the physical mechanisms underlying superradiance phenomenon based on cherenkov radiation expounded and the research activities in this field , both in and out of china , summarized
首先简述了高功率微波器件的发展历程和切伦柯夫超辐射机理，比较详细介绍了国内外在这一领域的研究状况。
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| 4. | Subnanosecond millimeter relativistic backward wave oscillator , based on superradiance mechanism , was a novelty microwave device developed in last few years . the dependence of peak power on the square of the density of electron beam is almost linear
基于超辐射机理的亚纳秒毫米波微波器件是近几年发展起来的一种新型微波器件，其辐射功率与参与束波互作用的电子束密度的平方成正比关系。
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| 5. | Using the particle - in - cell ( pic ) model , a 8 millimeter relativistic backward wave oscillator underlying superradiance mechanism was gotten , the influence on both operation frequency and radiation efficiency of the guiding magnetic field , the diode voltage , the beam current and the beam radius as well as the corrugation structure were also presented
采用pic方法，通过数值模拟优化设计了超辐射状态下的8毫米相对论返波振荡器，分析了引导磁场、二极管电压、电子束流、电子束半径、周期慢波结构等对器件的辐射功率及辐射效率的影响。
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| 6. | The linear and nonlinear optical properties of these compounds have been systematically studied . the following parts are included in this thesis : one - photon and two - photon fluorescence ; upconversion superradiance and cavity lasing properties ; the optical power limiting effect of these compounds ; and so on . tpa absorption coefficients have been got by z - scan method
3 、系统研究了它们的线性和非线性光学性质，主要包括：单、双光子荧光，上转换超辐射和腔激射性能及其效率，光限幅效应，用z - scan的方法得到了其双光子吸收截面。
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