A method to eliminate aperture diffraction in simulated digital hologram;
一种消除模拟全息图中孔径衍射的方法
In this paper,on the basis of the scalar diffraction theory of the angular spectrum representation and by taking the circular aperture diffraction as an example,power-series expansion corrections to the paraxial approximation are derived.
当光束具有较大的发散角或光束束腰可与波长相比拟时,傍轴近似不再成立;文章在标量衍射理论角谱表示的基础上,以平面波圆孔衍射为例,给出了衍射场的级数解,分析了级数解的有效性;级数解的适用范围与光束的束腰宽度、传输距离以及所使用的级数解的阶次有关;对受硬边光阑限制的光束,由于高频分量的贡献,当传输距离z较大时,高阶级数解的修正效果不好,甚至失效,级数解的有效范围将受到很大限制。
Based on MATLAB 6,this paper presents a computer program to carry out the emulation analysis of circular aperture diffraction and to discuss image-resolving power.
运用MATLAB6的软件平台,编制演示程序,对圆孔衍射和像分辨本领进行仿真分析。
As an example, the circular aperture diffraction is discussed in detail.
文章以圆孔衍射为例作了详细讨
In the explanation of hole diffraction in College Physics,dark loop diffraction formulas are generally not well deducted but given to students as a known condition.
在大学物理中,对圆孔衍射的讲解时,对于暗环衍射角公式一般都没有作详细的推导,只把它作为一个已知条件给学生,同时学生在实验室也很难做到精确测量圆孔衍射,或根本就没有做过圆孔衍射实验。
A pinhole diffraction model was used to define several key indexes in the modified moment method.
针对矩法对图像背景敏感的缺点,考虑数字太阳敏感器所成图像背景大而有效亮斑小的特点,对矩法进行修正以消除背景影响,通过小孔衍射的计算机仿真结果确定修正矩法中的关键参数。
This method is applied to the calculations of both the pinhole diffraction in subwavelength scale and random light field produced by random self-affine fracta.
然后将这一方法应用于亚波长尺度的小孔衍射的光波以及自仿射分形表面产生的随机光场及其在近场区域范围内的传播的计算。
And according to that,the on-off and far-field expressions for rectangular diffraction,the propagation formula in free space,slit diffraction and the paraxial far-field diffraction formulae are obtained.
根据矢量瑞利衍射积分公式,对非傍轴矢量离轴椭圆高斯光束的矩孔衍射进行了系统的研究,给出了矩孔衍射的解析表达式,并将非傍轴矢量离轴椭圆高斯光束矩孔衍射轴上、近场、远场和单缝衍射光场分布,非傍轴离轴矢量高斯光束以及非傍轴矢量高斯光束的自由空间传输作为特例统一于一般表达式中,研究表明,在矩孔衍射中,f参数,截断参数以及相对离轴参数共同决定着光束的非傍轴行为。
The relation is discussed between the shift of the point of maximum intensity on axis from the waist of focused Gaussian beam and the radius of the diffracted aperture, and the parameters of the Gaussian beam.
讨论了轴上点光强最大值相对会聚高斯光束束腰的偏移量同衍射孔径及高斯光束参数的关系。
Rayleigh-Sommerfeld Diffraction Formula on the Thin Acoustic Lens With Larger Aperture
较大孔径薄声透镜声场的瑞利─索末菲衍射公式
Using CCD censor to receive the Laser diffraction and measure the precise slot width and round hole radius
利用CCD接收激光衍射的方法测量精密缝宽和圆孔直径
Identification of X-ray Diffraction Fourier Pattern of Fuscoporia Obliqua;
桦褐孔菌X射线衍射Fourier图谱的鉴定
filled aperture radio telescope
连续孔径射电望远镜
aperture synthesis radiotelescope
综合孔径射电望远镜
A Numerical Computing Method for the Fresnel Diffraction of Rectangular Aperture
矩孔菲涅耳衍射的一种数值计算方法
Optical Vortices Generated by Three Pin-Holes Diffraction;
三个小孔的衍射场干涉生成光学涡旋
On Characteristics of Fraunhofer Matrix Aperture Diffraction and Its Simulation of MATLAB;
夫琅禾费矩孔衍射的特征及其MATLAB模拟
Improvement of the Experiment of Circular Aperture Diffraction Based on the CCD Technology
基于CCD技术的圆孔衍射实验改造研究
Simulation of Rectangle Fraunhofer Diffraction with Matlab
基于Matlab的矩孔夫琅和费衍射的仿真
Study on Experimental Conditions of Small-angle X-ray Diffraction on Mesoporous Materials
介孔材料的小角度X射线衍射实验条件研究
Comments on radial X-ray diffraction experiment in a diamond anvil cell
金刚石压砧径向X射线衍射技术的评述
Fraunhofer-diffraction Light Intensity Distribution of the Square Apertures Arranged as Phalanx;
正方形小孔方阵夫琅禾费衍射光强分布
The Propagation Characteristics of the Diffraction Field by a Circular Aperture of Bessel-Gauss Beam;
贝塞尔-高斯光束圆孔衍射场的传播特性
On Hues Which Fraunhoer Hole of White Ray Diffract Central Round Faculas;
白光的夫琅和费圆孔衍射中央圆斑色调
Analysis on the Fraunhofer diffraction of random distributed holes
随机分布的多圆孔的夫琅禾费衍射场分布研究
On Simulated Calculation of Fraunhofer Diffraction from Rectangular Aperture Based on MATLAB
基于MATLAB的矩孔夫琅和费衍射场模拟计算
