光束

It is shown that the M2 factor increases with increasing bandwidth and deceases with increasing spatial correlation degree.

研究结果表明，M2因子随脉冲光束带宽的增大而增大，随空间相关度的增大而减小。

Analytical expressions for the spatial and spectral profiles of the transmitted and diffracted beams are obtained.

讨论了体光栅的结构参量对衍射光束的空间和频谱强度分布以及衍射效率的影响。

That is, each slit gives rise to a diffracted beam whose nature, as we have seen, depends on the slit width.

那就是依赖于缝的宽度，每一条缝加强了光束的衍射，就像我们所看到的。

These diffracted beams then interfere with one another to produce the final pattern.

然后这些衍射光束彼此产生干涉而得到最终的图样。

It diffracts the diffracted beam which effectively means that it generates an inverse transform.

它对衍射光束再发生衍射，这实际上意味着它产生了一个逆变换。

Characteristic beam parameters in diffracted field of fiber end face .

光纤端面衍射场光束的特征参数。

The results show that diffraction of different intensity, in other words, the radius of the circular aperture apparently influences on the distribution of the normalized light intensity of the diffracted beam and its propagation law.

结果表明：不同强度的衍射即圆形光阑半径的大小明显影响衍射光束的归一化强度分布及其传输变化规律。

The translation movements in both directions are recorded in the phases of the fields of the diffracted six spots in a linear relation.

基板在作二维移动时，六道绕射光束的光场相位会随著光子晶体玻璃基板的位移向量来作线性变动。

The characteristics and the generating method are studied and the design method of the straightness error measuring system with non diffracting beam is presented.

研究了无衍射光束的特性及其实现方法，给出了测量系统的结构和参数。

Beams of light which transmit through a diffracting device 2 and a collimator lens 3 for incidence on a beam splitter 4 a are made up substantially only by P polarized light.

透过衍射装置2和准直透镜3后入射到分束器4a上的光束基本上仅由P偏振光组成。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。