激光束

Generally speaking, a certain diameter of the laser beam penetration depth as the beam power increases.

一般来说，对一定直径的激光束，熔深随着光束功率提高而增加。

Here in the enormous target chamber, the 192 laser beams enter the blue, 33-foot-in-diameter vacuum chamber (the blue hemisphere in the top photo connected to the metallic arms) where they will collide with a target roughly the size of a peppercorn.

在庞大的靶室里，192束激光束进入直径是33英尺的蓝色真空室，在那里跟一个胡椒瓶大小的目标物相撞。

For the low linear saturation threshold of photoelectric detector,a new and reliable method used in diagnostic system is introduced to attenuate high energy laser power density using multilayer dielectric coating.

针对环形光刀取样式高能激光束在线测量系统应用中光电探测器线性饱和功率密度低而被测高能激光功率密度高的特点，采用对取样激光扩束和介质膜衰减片级联衰减的方式，实现了数千倍的线性光强衰减。

Laser interference photolithography for fabricating periodic patterns in large area .

四激光束干涉光刻制造纳米级孔阵的理论分析。

A microfabrication of periodic structures by holographic lithography technology combined with the visible laser-induced photopolymerization is developed in this paper.

报道用激光全息技术结合可见光光聚合制作周期结构的方法和物理机理；对多束激光相干产生的空间干涉光场进行了讨论；提供了一组激光束的偏振态的最佳组合，使激光全息技术制作理想的亚微米单晶结构更有效和快捷。

The emulation result shows that the error of polarizer rotation angle almost does not influence nonlinearity when elliptic polarization of laser beams exists; when the error of rotation angle of polarizing beam splitter exists, the second-harmonic nonlinearity caused by the error of polarizer rotation angle will not increase, but the first-harmonic nonlinearity will increase greatly.

仿真结果表明，当存在激光束椭圆偏振时，检偏器旋转误差对非线性误差的影响很小；当存在偏振分光镜旋转误差时，检偏器旋转误差引起的非线性误差不增加二次谐波分量，但增大了非线性误差一次谐波分量，严重影响非线性误差的大小，当偏振分光镜旋转误差为3°时，检偏器旋转误差从0°增加到5°，非线性误差从0.14 nm增大到0.97 nm。

The experiment is valuable in study of the light transmission in fog and in analyzing the effect of fog on laser radiation polarization in the atmosphere.

Chu等[3]则对0·63、3·5、10·6μm激光束因雾引起的衰减和散射进行了计算和测量，并详细讨论了2·6 km路径上的传播测量，得出光在雾中的衰减很大程度上是由于许多小液滴散射的结论。

An analysis of the Random error effect on the measurement precision in laser beam quality evaluation.

激光束质量评价中随机误差对测量精度的影响。

Photoelectrons ejected from the surface of a stainless steel target under irradiation of a pulsed laser beam can be used to excite and to ionize the gas species in the ionization zone, which is between the extractor and the repeller plates.

当不锈钢靶表面被一束超短脉冲激光束照射时就会产生光电子，用这些光电子轰击TOF质谱电离区中的气体使其电离。

The mechanism of pulsed laser milling is introduced briefly,and the effects of the technological parameters such as the single pulse energy of laser, the repetitional frequency,the laser beam scanning speed and the assistant huffing pressure are investigated.

在分析脉冲激光铣削材料去除机理的基础上，系统研究了激光单脉冲能量、重复频率、激光束扫描速度和辅助吹气压力等工艺参数对硬质合金激光铣削量和质量的影响，观察不同工艺参数条件下激光铣削的表面微观形貌。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。