您要查找的是不是：
- Optical limiting by using thermal self defocusing[J]. 引用该论文 司金海;刘树田;杨淼;杨昆;李淳飞.
- The recipe design,melting and ion exchange process for the defocusing and focusing GRIN fiber lens glasses is studied. 本文对发散型和聚焦型两种纤维透镜玻璃的配方设计、熔制以及离子交换工艺进行了研究。
- Photolithographic Fabrication Techniques by Using Defocusing Laser Direct Writing[J]. 引用该论文 李凤友;卢振武;谢永军;张殿文;裴苏;赵晶丽.
- Based on the ABCD matrix and Gaussian beam propagation theory, the Gaussian beam transforming formulas through a parabolic defocusing GRIN fiber lens are derived. 本文根据ABCD矩阵和高斯光束传播理论,导出高斯激光束经抛物型发散梯度折射率纤维透镜的变换公式。
- Analyzed is the dependence of the defocusing quantity on the hologram size and the spatial frequency bandwidth of the object. 分析了全息图尺寸及其记录的空间频带宽度与离焦量的关系;
- The experiments of measuring convergent beam wavefront with a quadratic grating are carried out.It is found that the defocusing aberration... 由于大功率激光束的不稳定性,其波前变化非常快,所以该方法的实时性非常适合于这种波前变化的测量。
- Simulation results show phase-diversity method can accurately retrieve the wavefront and defocusing of one wavelength is optimal. 模拟研究结果表明，相位差法可以较准确的恢复出波前相位，并且最优化的离焦波面差为一个波长。
- Both the power control model and linewidth model of the proposed method are established with defocusing amount as the unique variable. 推导了稳定线宽后的光功率控制模型和线宽模型,模型中的变量仅为离焦量,降低了光功率控制的复杂性。
- The primary factors affected welding depth and width have been studied, for example: welding power、speed、defocusing parameter and flow parameter. 进行了厚钢板和汽车齿轮的激光焊接实验,实际测量了激光功率、焊接速度、离焦量、辅助气体等工艺参数对焊接质量的影响。
- The linear focusing effect and linear defocusing effect on the interaction between spatial solitons have been studied by numerical simulation. 结果表明,线形聚焦效应增强了空间孤子之间的相互作用;
- The present research mainly focuses on detecting the processing stability,assembly quality,defocusing,weld penetration,weld shape,pool and keyhole,etc. 目前实时检测的内容主要有焊接过程的稳定性、装配质量、离焦量、焊缝熔深和表面形貌、熔池与小孔的形态等。
- The positions for focusing foci and defocusing foci can be exchanged by turning on or off the coding state of spatial light modulator. 开关SLM的编码态，聚焦点和散焦点的位置交换。
- The effects of lighting wavelength, coherent coefficient, aperture number and defocusing to image quality can be studied with this method. 用于研究照明波长、相干系数、数值孔径及离焦等对成象质量的影响。
- Important applications of isotropic nonlinear materials are seen in self-focusing, defocusing phenomena, switching systems, etc. 各向同性非线性材料的重要应用包括自聚焦和散焦现象、开关系统等。
- Abstract The El mass sprctra of organophosphorus compounds containing tyraminyl radical were studied by means of high resolution and metastable defocusing MS technique. 摘要 本文在亚稳态测定和高分辨精确质量计算的基础上,研究了二类酪胺基有机磷化合物的质谱裂解规律。
- Dual waveband signals in high power laser welding were recorded and analyzed, especially, the law between the signals magnitude and the defocusing was discussed. 记录和分析了高功率激光焊接中工作区的紫外和红外信号，着重分析了双波段信号与离焦量变化的对应规律。
- At the same time, the popular culture appearing with the course of modernization exerts the strategies such as conversion focalizing and defocusing etc. to solve the crisis. 同时随现代化进程而出现的大众文化运用“转换”、“聚焦”、“散焦”等策略展开了对于时间危机的拯救。
- Research results show that the incline and defocusing of reflection plane in optical instrument (such as telescope and camera) reduce the intensity of the "Cat"s eye" reflection. 研究结果表明:回波强度受光学仪器内部反射面倾斜和离焦及光学镜头相对孔径的影响较大,扫描光束的入射角和物镜相对孔径等因素对回波强度也有一定影响。
- By means of a Reyleigh-Ritz optimization procedure, the closed form solutions for the evolution of beams in both defocusing and self-focusing cases can be obtained. 运用瑞利-里兹方法求解其变分方程，分别求出光束在自散焦和自聚焦介质中的变分解。
- The studied results showed that,it is direct proportion to laser power,inverse proportion to welding speed and exponential proportion of 4 orders to defocusing distance. 焊接体能量与激光功率成正比、与焊接速度成反比、与离焦量成四阶指数关系,与焦点尺寸成平方关系。
