| 1. | When diffraction problems are solved by the angular spectrum theory , high speed and high accuracy can be obtained , especially for near - field fresnel diffraction
用角谱理论来处理衍射光场，不仅速度快，而且在处理近场菲涅耳衍射光场时的准确度是其它方法无法比拟的。 |
| 2. | And also , through the numerical algorithm of fresnel diffraction , we have realized the computer generation and numerical reconstruction of point hologram and fresnel hologram
利用菲涅耳衍射积分的数值算法，分别实现了基元全息图和菲涅耳全息图的计算机生成和数字重现 |
| 3. | Based on the fresnel diffraction integral , the analytical expression for the field distribution of converging spherical waves passing through an annular aperture is derived and some special cases are discussed
摘要基于菲涅耳衍射积分公式，推导出了会聚球面波通过环形光阑后场分布的解析公式，并讨论了一些特殊情况。 |
| 4. | Our study shows that two models are in good agreement with the numerical results derived from the fresnel diffraction theory from - r0 to + r0 in the radial position . we discuss some potential applications of the blue - detuned fhb
从这两种拟合的效果来看，在径向位置- r _ 0到r _ 0的范围内，这两种光束模型与数值计算结果拟合的非常好。 |
| 5. | ( 2 ) based on the theory of diffraction , we push over the fraunhofer and fresnel diffraction of obscuration . moreover , the distribution of complex amplitude is given , and the rule is validated by the optical propagation software researched by caep
二、根据单缝衍射理论推导散射点的夫琅和费和菲涅耳衍射规律,分别给出了散射点的夫琅和费和菲涅耳衍射的复振幅分布情况。 |
| 6. | The form of the psf has been deduced according to the fresnel diffraction , and it has been analyzed that the frings density of the psf depends on the axicon ' s refracting angle and the distance l between the point light source to lens l2
利用菲涅耳衍射理论，推导出相干光照明下无衍射系统的点扩散函数( psf )的形式，并分析出点扩散函数的条纹疏密与锥镜的夹角和点光源的位置有关。 |
| 7. | Based on huygens - fresnel diffraction integral theory , the propagation properties of bessel beam were studied in this paper . by using the analyses of geometrical optics , hollow beam are found and the formula of the starting point 、 the end point and the bottle length can be got
论文中,我们基于惠更斯-菲涅耳衍射积分理论研究了由轴棱锥产生的贝塞尔光束的传输特性,并且通过几何光学解析无衍射光束的聚焦特性。 |
| 8. | Abstract : in this paper , starting from the generalized huygens - fresnel diffraction integral and b - integral definition , and based on the statistical - optics method , the nonlinear propagation properties of laser beams with amplitude modulations and phase fluctuations have been studied in detail
文摘:广义惠更斯-菲涅耳衍射积分和b积分定义出发，并利用统计光学方法，对有振幅调制和位相畸变光束的非线性传输特性作了详细研究。 |
| 9. | In this thesis , we present the law and method to generate structured illumination based on fresnel diffraction . by applying rsd theory , we analyzed the spatial distribution of fresnel diffraction field of sinusoidal grating and its available application in 3d sensing
本文详细地研究了基于菲涅耳衍射的结构照明的原理和方法，利用角谱理论(平面波衍射理论)分析了正弦光栅的衍射光场的空间分布及其在三维传感中应用的可能性。 |
| 10. | The main contents of this thesis are : ( 1 ) two numerical reconstruction methods - direct fourier transform method and envelope method , are presented . these methods are deduced on the base of fresnel diffraction integral formula , which is under the condition that particle field is illuminated by plane wave
主要工作内容有： ( 1 )分析推导了平面物菲涅耳衍射的两种常用数值实现算法，即直接傅里叶变换法和卷积法，结论表明后者更符合实际工作的要求。 |
