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。

A possible configurate to improve the absorption efficiency of the pump energy has been proposed. With the theory of four waves mixing, we have demonstrated this scheme. By introducing the scheme into self-pumped conjugater, the performance of diode laser array with self-pumped conjugate was enhanced, the usage of incident light was improved apparently.

利用双四波混频作用区理论分析了该配置方式的合理性，并把这种配置方式引入到自泵浦相位共轭镜中，对整个利用自泵浦相位共轭镜的半导体激光器列阵实验方案进行了改进，从而显著提高了入射光束能量的利用率。

But there are still some key problems which should be solved before using in practice. In the view of application, the theory and experiment of multi-beam confocal system are studied in depth in this dissertation.

该项技术在实际应用中还存在许多亟待解决的问题，本文从应用的角度出发，对多光束共焦系统进行了深入的理论和实验研究，以期推动该项技术在工程中的应用。

A novel combined phase conjugator consisting of a fused silica rod and silica fiber is used in the high repetition laser system to improve the light quality.

提出了一种新型的由熔石英棒和石英光纤组成的复合型相位共轭镜，其可运用于高重复频率激光输入系统中以改善光束质量。

In this paper, the principle of sell-pumped conjugator has been introduced and some parameters which effect the conjugate efficiency have been discussed, the experiment scheme using self-pumped eonjugater to improve the output quality of diode laser array has been discussed.

通过介绍自泵浦相位共轭镜的工作原理，针对影响共轭效率的参数进行了讨论，列举了采用自泵浦相位共轭镜改善激光列阵光束输出质量的多种常用实验方案，并总结了这些方案的优缺点。

As a result, high quality laser beam with energy of 4.1 mJ and energy-stability less than 10% have been obtained when 4.6 mJ pump energy injected into fiber phase conjugator.

由于光纤受激布里渊散射存在的阈值效应，可以抑止使用平面全反镜的四通放大系统中难以克服的放大级自振荡和放大自发辐射效应，以获得高能量高光束质量的激光输出。

And a way to improve the operation state of this combined phase conjugator is introduced by our modeling.

标 签 熔石英光纤相位共轭光束质量 fused silica optical fiber phase conjugation beam quality

The beam conversional properties of Gaussian beams through a telescope-lens system were deduced based on parameter q and ABCD law.

运用q参数和ABCD定律，推导了高斯光束经望远镜和薄聚焦透镜组合系统的聚焦特性的变化规律，并对其进行了数值模拟计算。

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。

In addition, analytic expression of the waist spot size and working distance of output Gaussian beam were derived, and the influence of coreless fiber and GRIN fiber's length upon fiber-lens parameter was discussed by numerical simulation results.

推导了出射高斯光束的束腰半径和工作距离的解析表达式，进而对该光纤透镜做了数值模拟，讨论了无芯光纤和GRIN多模光纤的长度对光纤透镜参数的影响。

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％。