At the back focal plane of the objective , the blue wavelengths from each slit interfere constructively to produce the blue area of the diffracted image of each spectrum or order ; similarly for the red and green areas ( figure 4 ( a ) ) 在物镜的后焦面,从各个窄缝发出的蓝色波长光产生增强干涉而产生各级的衍射图像的蓝色区域,红色波长和绿色波长也一样(图4 ( a ) ) 。
The x - ray diffract was used to analyze the crystal structure of the composite . results show that after the talc was treated with blend coupling agent , the crystal structure of talc changed , and effect intercalation phenomenon 通过x射线衍射分析可知,用混合偶联剂对滑石粉进行预处理后,滑石粉晶体结构发生改变,产生了插层现象,使pp滑石粉复合材料为纳米复合材料。
On the basis of the study of the characteristics of diffracted wave produced during the vibration propagation along the fissures , in association with practical example , the paper introduces the features of prospecting the depth of fissures of structural mass by using the seismic method 该文在研究振动沿裂缝传播时所产生绕射波的特征基础上,结合实例,介绍了运用地震法探测结构体裂缝深度的方法特点。
Abstract : on the basis of the study of the characteristics of diffracted wave produced during the vibration propagation along the fissures , in association with practical example , the paper introduces the features of prospecting the depth of fissures of structural mass by using the seismic method 文摘:该文在研究振动沿裂缝传播时所产生绕射波的特征基础上,结合实例,介绍了运用地震法探测结构体裂缝深度的方法特点。
If you were to block out the outermost diffracted orders by placing an opaque mask at the rear of the objective , you could reduce the resolution of the lines of the grating , or any other detailed object , or " destroy " the resolution altogether so that the specimen would not be visible 假如用不透明的遮挡物在物镜后焦面挡住外圈衍射级的光线,线形栅格图像的分辨率将下降,这样完全地破坏了分辨率,标本的细节就无法看见。
In considering diffraction errors there are two factors which will lead to diffracted rays originating from outside the area defined by the selector aperture , these are important in any work where a spatially accurate correlation of the diffraction data and the micrograph is required 考虑到衍射的差错,有两个因素决定源自选择孔指定区域外部的衍射线,在任何工作中这些都是重要的,当衍射数据和显微图之间准确的空间对射被要求时。
Based on the scalar diffraction theory and the boundary condition of rayleigh - sommerfeld , the accurate on - axis propagating wave function of plane wave diffracted by small circular band is obtained by solving the first integral of rayleigh - sommerfeld 摘要从标量衍射理论出发,采用瑞利索末菲衍射边界条件,通过求解第一类瑞利索末菲衍射积分得到平面波经圆环衍射后轴上的波函数,进而分析轴上的光强特性以及光强极值数量、位置和大小与衍射圆环内外孔径的关系。
When the beam waist wy of blue - detuned segb along the y direction is 10 mm , and its wx is decreased from 10 mm to 1mm , the absolute diffracted intensity from the segb surface will be 10 times of that from the sgb surface , which can be used to reflect an incident atomic beam with a higher normal velocity 因此,当椭圆高斯光束的w _ y = 10mm ,而w _ xw从10mn减小到1mm ,半束兰失谐椭圆高斯光束反射面的衍射光强将比同样参数条件下的sgb反射面的衍射光强提高了10倍。
This multi - purpose optical metering system had adopted the twyman - green interferometric system as its center , containing an advanced digital wave surface interferometry and a kind of homodyne interferometer displacement testing method with nanometer - sized capacity . at the same time , many wide - applied metering technology , for example , the diffracted field ( fringe ) measurement , co - focal lens system , optical fiber sensors and 4f ( focal distance ) space filter system which can embody the chief principle of fourier optics well , were combined into it successfully . this instrument can firstly offer and show modern optical testing method in the laboratory for majors of information processing , instrument science , measuring and testing technology and automatic technology 该多功能激光光电实验系统以泰曼-格林干涉( twyman - green )光路作核心,包括先进的数字波面干涉技术和一种基于空间干涉原理的、纳米分辨率零差干涉仪位移测量方法,同时将多种新颖、工程实用价值高的测量技术和光路如衍射测量、共焦显微技术、光纤传感技术以及反映傅立叶光学基本光学原理的4f空间滤波系统也组合进去。
However , the intensity gradient ( force ) of the diffracted light of the semi - gaussian beam is far smaller than that of the evanescent - light wave , so its spontaneous emission probability is greater than that from the evanescent - light one when the normal velo city of the incident atom is greater 然而,因为半束兰失谐高斯光束衍射光场的强度梯度力远小于消逝波光场,所以当入射原子速度较大时,原子在半束兰失谐高斯光束衍射光场中的自发辐射几率要大于消逝波光场。