查询词典 laser beam

The beam quality of a LD pumped Nd∶YAG laser is measured with CCD camera system. The background characteristics of the CCD system and the influence of the size of integral box upon measurement results are investigated. The following conclusions can be derived form experimental results:(1) Background is strongly depend upon exposure time and pixel binning,while temperature has an ignorable effect upon it,whether with or without ambient light.(2) A 5%-cut is the minimum value in order to get a reasonable result.

采用CCD系统实验测量了LD泵浦Nd∶YAG激光器的光束质量参数，研究了CCD系统的背景噪声特性和积分区域选取对光束质量参数测量的影响，从实验数据中得到以下结论：（1）在有、无背景光两种条件下，背景记数强烈地依赖于曝光时间和像素的合并，温度影响可以忽略不计，（2）为获得M2合理的测量结果，至少要选择5%积分区域。

This system effectively combines several individual laser beams coherently into a single beam in phase.

这个系统有效地将几个独立的激光光束连贯地整合成一个单一激光光束。

If you then tilt the main mirror to center the beam returning to the laser, the collimation will be 1 mm off!

如果你又调整了主镜，把光束居中的话，调整后的镜子将有1mm的偏差。

For several years now, technology leading compound semiconductor companies have introduced multi beam laser dicing to replace the conversional mechanical die separation technology such as sawing and scribe and break.

已有几年了，技术领先的复合半导体公司引进了多光束激光划片来替代常规的机械式冲模分离技术，比如锯开，划线器划开然后掰开。

Its drilling unit consists of laser, optical beam expander, galvanometer deflective mirror and focus system.

制孔单元由激光器、光学扩束、振镜和聚焦系统构成。

And the problem of "detune"existing in backward mode couple is resolved. So the reliability of the coupled laser system can be improved remarkably. At the same time, by using two copper vapor lasers with UR90s of M=1. 21 or AOUR90s of M=1. 5, the coherency beam combinations are implemented.

首次提出将多个UR90腔进行正向模耦合来产生多束相干的激光的方法，解决了以往采用反向模耦合方法中存在的失谐问题，可以大大提高耦合激光系统的可靠性。

Laser light travelling in a medium such as an optical fiber, the variations in the electric field of the beam itself may produce acoustic vibrations in the medium via electrostriction.

他们用两个2ns的&数据&脉冲前后耦合入玻璃光纤的一端，来模拟两个几乎同时到达的信息包，同时将一1.5ns的&写&光脉冲耦合入另一端。

This dissertation includes two parts. The first part deals with study on gas-phase reactions of metal ions with ethanethiol molecule by using the laser ablation-molecular beam method and density functional calculations. The second part describes experimental and theoretical study on VUV photoionization of some molecules using synchrotron radiation.

本论文分两大部分，第一部分介绍利用激光溅射-分子束技术研究金属离子与乙硫醇的气相反应，并用密度泛函理论研究了反应形成的团簇离子的结构和特性；第二部分介绍一些分子的真空紫外同步辐射光电离，结合量化计算分析了实验结果。

Cerebral infarction Low intensity He-Ne laser intravascular beam Hemorheology Intraserous SOD

脑梗塞；低能量氦－氖激光血管内照射；血液流变学；血清SOD

The principle and application of sending out the light beam of He-Ne laser in manyways is described.

介绍了He－Ne激光器多方式出光的原理和应用。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。