| 1. | Beam shaping of partially coherent beams focused by a lens
部分相干光经透镜聚焦后的光束整形 |
| 2. | Therefore , the investigation of beam focus of partially coherent beams becomes more and more important research topic
因此,对部分相干光束的聚焦的研究变得十分重要。 |
| 3. | 2 . the analytical pressure distribution of ultrasonic phased array for the beam focusing was obtained using the huygen s principle , by use of computer software , the pressure distribution was plotted . 3
根据相控阵的延时聚焦原理，推出了相控阵的声压分布表达式，采用数值分析法，利用计算机软件画出了声压分布图。 |
| 4. | 3 . the analytical pressure distribution of ultrasonic phased array for the beam focusing was obtained using the huygen s principle , by use of computer software , the pressure distribution was plotted . ( 3 )
根据相控阵的延时聚焦原理，推出了相控阵的声压分布表达式，采用数值分析法，利用计算机软件画出了声压分布图。 |
| 5. | When only allows the total internal reflection beams focus on the small aperture , which is formed at the center of metal film coated on the bottom of solid immersion lens , the optical fields propagated from the aperture of different dimension is first simulated
根据衍射超分辨原理首次模拟出了底面镀有金属膜、中心留有通光微孔的固体浸没透镜的出射光场分布。 |
| 6. | Multiple beam focusing horn lens antenna is an important part of interferometer . multiple beam lens antenna ’ s designing and measurement are crux because antenna ’ s far - field focusing ability is used to judge interferometer ’ s capability
多波束聚焦透镜天线是扫频式干涉仪诊断技术的重要部件,它们的性能直接关系到干涉仪系统指标的优劣,因此对多波束聚焦透镜天线的设计和测量也很关键。 |
| 7. | Imaging formula and object - image scale formula of laser beam transferred by focus lens are deduced according to the abcd law of matrix optics , and the factors that effect on beam focus properties are analyzed based on these two formulas
根据矩阵光学变换的abcd定律,推导出激光束经过单聚焦镜变换后的成像公式和物像比例公式,并在此基础上讨论光束质量和聚焦系统特性对光束聚焦性能的影响。 |
| 8. | Chapter 4 : in this chapter , we derive the formula of ponderomotive force from lorentz equation and analyze the effect of ponderomotive self - channeling ( psc ) firstly . it is found that the effect of psc enhances the effect of beam focusing . and a nonparaxial propagation equation including the effect of psc is established
分析激光传输过程中的有质动力自通道效应，结果表明，有质动力自通道效应能增强激光自聚焦，在此基础上建立了包含有质动力自通道效应的非傍轴传输方程。 |
| 9. | Based on analyse of parameters which used to evaluate laser beam quality at present and according to the main properties which influence on laser manufacturing , beam focus characteristics parameter is put forward as the stander parameter to evaluate beam quality , because the foundmental advantage of laser beam applied in industral field is that laser beam can achieve high energy intensity through focusing
论文在总结目前存在的评价激光光束质量参数的基础上,根据对影响激光制造的主要光束特性参数的分析,以光束空间特性为核心,提出用光束聚焦特征参数值作为评价激光光束质量的参数。因为激光作为能源能够在工业领域广泛应用的根本优势就在于它可以通过聚焦获得极高的能量密度,而值恰恰表征了实际光束的可聚焦能力。 |
| 10. | A focal plane imaging is limited in catching object when spot - focusing horn lens antenna is applied in ballistic wake microwave interferometer . so we consider to designing multiple beam focusing horn lens antenna in order to augment the range of catching and enhance the probability of hitting the target
本文的主要工作是针对弹道靶尾迹微波干涉仪里的点聚焦单波束捕捉目标的有效性能不足,而考虑设计一个具有点聚焦特点的多波束聚焦透镜天线,以增大捕捉范围和提高中靶率。 |
