改善光纤倒像器的对比度传递特性

光纤倒像器是一种特殊类型的光纤板，可将传递图像直接倒转180°并应用于像增强器。由于光纤倒像器的特殊结构，造成光纤随着距扭转轴心的距离增加，数值孔径和光通量逐渐下降。相对于光纤板，光纤倒像器在透过率和对比度传递特性上均有一定程度的下降。通过改进玻璃系统，在一定程度上降低芯皮玻璃间离子扩散和相互渗透的程度，可提高光纤倒像器的实际数值孔径；通过调节EMA吸收量，既能满足像增强器对光纤倒像器荧光屏透过率的要求，又能保证最大程度地吸收光纤中逸出的杂散光，提高对比度。选择合理的芯皮比，不仅可弥补因扭转拉伸造成的皮层厚度减薄，还可进一步增加皮层厚度，抑制光从光纤中逸出。通过以上改进，可改善光纤倒像器的对比度传递特性。     

变频压缩机空调系统的理论分析及实验研究

变频空调器是由变频压缩机驱动的空调系统,压缩机通过变频调节其转速使压缩机单位时间内的排气量变化,从而达到调节制冷量的目的。本文提出了变频空调器制冷系统的原理和设计方法,具体给出了制冷量和压缩机频率的关系方程,并从理论和实验两方面对变频空调器制冷系统进行了分析,得到了频率曲线图,为变频空调器制冷系统的设计提供了依据。     

Kerr介质中级联三能级原子与压缩相干态相互作用的光子统计演化

本文研究了存在Kerr介质的高Q腔中压缩相干态与级联三能级原子相互作用的光子统计演化规律,讨论了光场参数、Kerr介质及相干振幅对平均光子数的影响.     

飞秒激光参数对三态阶跃型分子Autler-Townes分裂的影响

利用三态模型和含时波包法, 研究了K₂分子在强飞秒泵浦-探测激光场中泵浦/探测场强、波长对光电子能谱Autler-Townes(AT)分裂的影响．通过分别改变两激光场的场强或者波长预测AT峰移和间距,并且首次量化了AT分裂的峰移和间距．光电子能谱在共振时显示为对称双峰,失谐时为非对称双峰。AT分裂间距随泵浦场强增大而增大,但不因探测场强改变而改变．     

About collapse and revivals of two quantum oscillators in off-resonance interaction

The off-resonance effect and its influence on the reversibility between two quantum subsystems in interaction (single mode cavity field and a three-level atom in cascade configuration) are studied. The partial restoration condition is found at which these radiators can restore their diagonal moments, while the non-diagonal ones remain correlated after the interaction process.     

Correlation and entanglement of a three-level atom inside a dissipative cavity

We discuss the correlation and entanglement of a three-level atom with a single-mode quantized field in a coherent state inside a phase-damped cavity. We analyze the influence of dissipation on the quantum and classical entropy. It has been shown that the quantum, classical and nonextensive entropy are sensitive to any change in the initial state setting of the atom and the quantized field. The relation between the long lived entanglement and dissipation is observed. On the other hand, a short disentanglement can be generated through special values of the atomic motion parameter.     

Three-level warranty service contract among manufacturer,agent and customer: A game-theoretical approach

A warranty is a service contract between a manufacturer and a customer which plays a vital role in many businesses and legal transactions. In this paper, various three-level service contracts will be presented among the following three participants; a manufacturer, an agent, and a customer. In order to obtain a better result, the interaction between the aforementioned participants will be modeled using the game theory approach. Under non-cooperative and semi-cooperative games, the optimal sale price, warranty period and warranty price for the manufacturer and the optimal maintenance cost or repair cost for the agent are obtained by maximizing their profits. The satisfaction of the customer is also maximized by being able to choose one of the suggested options from the manufacturer and the agent, based on the risk parameter. Several numerical examples and managerial insights are presented and used to illustrate the models presented in this paper.     

Bistable Optical Devices Using Laser Diodes Coupled to Interference Filters

A bistable optical device was demonstrated by using the longitudinal mode hopping of the laser diode and the narrow transmission spectrum of an interference filter. The device is capable of converting changes in the wavelength of the laser diode into changes in intensity by transmitting it through the filter. Exclusive OR operation was observed with the use of triple signal outputs. In addition, an optical switch-off phenomenon was confirmed by directly injecting a pulse 500 ps wide into an external dye laser.     

光纤倒像器的透过率

本文论述光纤倒像器中扭转光学纤维和尺寸及其特别的传光性能。用定性和定量的方法,分析影响光纤倒像器透过率的若干因素,给出透过率随径向位置和孔径角的变化关系。提出在制造、应用和测试这种光学元件时应该注意的有关问题。     

CMOS三值译码器

本文探讨了在常规CMOS集成电路基础上设计三值逻辑电路的方法。从三值倒相器入手,结合常规CMOS门电路,给出了CMOS三值译码器的设计方案及应用电路。