光束

From the comparison,itcan be concluded that when passing through a same aberrated optical system,therelative intensity degradation for a Gaussian beam is less than that of an uniformbeam.

经过对比，可以得到这样一个重要的结论，即相对于均匀光束来说，同一像差光学系统对高斯光束的光强影响要小一些。

In chapter four,based on diffraction theory,we derived the far field intensitydistributions near geometric focus for off-axis Gaussian and uniform beams passing througha primary aberrated optical system.

在第四章中，基于衍射理论，推出了离轴高斯光束和均匀光束通过一个初级球差光学系统后，其几何焦点附近的远场光强分布公式。

We find that optical vortices could be efficiently formed and generated due to the interference and superposition effect of all the beamlets, during the propagation process of the coherent radial laser arrays with the initial well-organized phase distributions through the free space, the resulted beam in the far field has the strong rotation effect with the phase helicity.

我们发现具有确定初始相位的、圆径向对称分布的相干激光阵列光束在传播的过程中由于干涉和叠加效应可以形成螺旋形的位相分布且保持光束中心强度为零，即形成光涡旋。

A new method for producing flat-topped beams: Hermite-Gaussian beam combination .

一种产生平顶光束的新方法：厄米高斯光束的合成。

Further more, the intensity distribution of output beam of single fiber and multi-fiber coupled laser diode is discussed. The pumping effect is studied by using the model of flat-topped beam.

在此基础上结合实际，讨论了单根光纤和多根光纤耦合LD的输出光束的光场分布，并利用已建立的平顶光束模型分析了它们的泵浦特性。

Recently, diffractive optical elements have been applied to various aspects, such as the pick-up head of DVD, beam shaping and beam dividing, etc.

摘要绕射光学元件，近来应用日渐广泛，可应用於DVD读写头，及光束整型，光束分离等。

Recently, diffractive optical elements have been applied to various aspects, such as the pick-up head of DVD, beam shaping and beam dividing, etc.

绕射光学元件，近来应用日渐广泛，可应用於DVD读写头，及光束整型、光束分离等。

Slit mechanism can limit the beam angle, hold excrescent light and select wavelength on Beam Line. The opening width of the exit slit determines bandwidth of wavelength to be measured, and has a direct influence on resolution and photon flux of optical system.

狭缝装置在光束线上起着限定光束张角，阻挡杂散光，波长选择等作用，狭缝的宽度决定了待测辐射的波长带宽，直接影响着光学系统的分辨率和光通量。

On the basis of the theory of Gaussian light beams transmission and applying principles of matrix optics and theory of Gaussian light coupling, a theoretical equation for calculating the return loss of fiber collimator with beveled end face and GRIN lens is derived.

在高斯光束传输理论的基础上，利用矩阵光学的原理和高斯光束耦合理论得出了斜面耦合自聚焦透镜型光纤准直器的回波损耗的数学表达式。

The solitons radius is related to the total power as well as the coherence characteristics of the incoherent beam.

入射光束的功率以及光束的相干特性决定了孤子半径的表达式。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。