We have also discussed the effect of the beam divergence on the second harmonic conversion efficiency.
还讨论了泵浦束的发散角对二次谐波转换效率的影响。
The experimental results of energy threshold, output energy and beam divergence of the first Stokes are present.
文中给出了一阶斯托克斯光泵浦阈值、输出能量和光束质量的实验数据。
The problem how to select optimum of signal-to-noise ratio and laser beam divergence for laser range-finder is studied.
研讨激光测距仪的信噪比和激光发散角如何选取最佳值的问题。
Since the severe asymmetry of optical field and beam divergence degrade the coupling efficiency, the waveguide structure optimizing needed.
这就要提高激光器出射光场的对称性，减小光的散射角，这需要提高对激光器波导层的结构优化。
For large probe beam divergence the SNR is relatively poor, and even a streaky signal process is predicted if a point target is scanned across.
系统发射的探测光束发散角较大时，信噪比较差，且光束扫过点目标可能出现条纹状信号过程。
According to acquisition and tracking strategy and laser detection theory, an expression of the best Angle of beam divergence under direct detection is provided.
根据捕获跟踪策略和激光检测理论，给出了直接探测情况下最佳光束发散角的表示式。
The output parameters such as beam divergence angle in far-field output power of high power solid state lasers are variable due to thermal effect of optical pumping.
由于光泵浦热效应，高功率固体激光器的输出参数如光束远场发散角、输出功率等会发生变化。
In this paper, the theoretical design for the quantum well lasers with vertically integrated passive waveguides, which decreases the vertical beam divergence effectively, are reported.
报道了一种具有垂直集成无源波导的耦合波导结构量子阱激光器的理论设计，它可以使垂直结平面方向的远场光束发散角得到有效的降低。
The results show that beam divergence of the system depends mainly on the extraction perveance and voltage ratio, and a minimum beam divergence can be obtained under optimum conditions.
结果展示出引出束光学主要取决于引出导流系数和电势分布，在一定条件下可获得发散度小的离子束。
The operating distance of a laser radar system is determined on pulse energy, pulse width, beam divergence angular, atmosphere attenuation, target reflection, receiver sensitivity and so on.
激光雷达系统的作用距离由下列因素决定：脉冲能量、脉冲宽度、光束发散角、大气衰减、目标反射率和接收机灵敏度等。
This method in the invention is only measuring in the one position of the optical path; therefore the method can facilitate to realize the real-time measurement of the beam divergence Angle.
本发明方法只在光路中的一个位置测量即可，因此本发明方法可方便地实现光束发散角的实时测量。
In this article we discuss the relation between the laser beam divergence and the amplification factor in unstable cavities and the principles for the design of unstable resonators are given.
本文研究了非稳腔激光束发散度与腔的放大倍数的关系，并提出了非稳腔设计的原则。
Another important application of diffraction theory is the study of the far field divergence Angle of a collimated light beam.
衍射理论的另一个重要应用就是研究准直光束的远场发散角。
After the focal plane, the focused hollow beam propagated according to a constant Angle of divergence, the DSS become larger, and the intensity become weaker.
经过焦点后，这一聚焦中空光束将以一定的角度发散，它的DSS会变得越来越大，光强度变得越来越弱。
A beam of high radiant power will have high divergence.
高辐射功率的光束会有高的发散度。
Because the beam formed by a tapered coupler is produced by many rays that emerge at slightly different angles, the outgoing beam is characterized by a relatively large divergence.
因为尖劈耦合器形成的光束是由许多出射角稍有不同的光线组成的，放出射光束的特点是具有较大的发散度。
It is also shown that the second-order moment method of the power density is applicable to the truncated beams and overcomes the divergence difficulty of the beam quality factor.
功率密度的二阶矩方法可用于截断光束，并克服了光束质量因子的发散困难。
The relative errors of the beam width and far-field divergence angle introduced by the spherical aberration increase with increasing spherical aberration coefficient and decreasing beam order.
束宽和远场发散角的相对误差随球差系数绝对值的增加和光束阶数的减小而增加；
Theory analysis and computer simulation show that the precision and focus of star tracker, the divergence angle of down beam influence the probability of laser link setting up.
理论分析和计算机仿真都表明，星敏感器的测量精度和焦距，下行信号光的束散角将影响激光链路成功建立概率。
The correlated spontaneous up conversion and down conversion photons exhibits a high beam brightness, small spatial divergence, and broad spectral tunability.
相关的自发参量上转换和下转换光子表现出光束亮度高、空间发散小以及在很宽频谱范围内可调谐等特点。
In conditions that the laser gains can be obtained, the relations between the maximal allowable divergence Angle of incident electron beam and other physical parameters are discussed.
在获得激光增益的条件下，讨论了入射电子束的最大许可发散角与其它物理参数之间的关系。
This paper demonstrated the basic parameters and characteristics of laser beam, and introduced the basic principles and the devices used in the CCD laser divergence Angle measurement method.
简述了激光光束的基本参数及特性，并介绍了采用CCD进行激光发散角测量的基本原理和装置。
The divergence Angle of light beam was measured with the method of CCD imaging and computed by second moment method.
通过CCD成像方法对准直后的光束发散角进行了测量，利用二阶矩算法计算出光束发散角。
It has small body, optics, clear beam and low divergence and favorable verticality and high accuracy and industrial strength.
体积小；光学透镜，光线清晰，低发散度，垂直度好，高精确度，工业适用性强。
Finally by analyzing these data we can obtain the parameters about the laser beam such as: beam size, relative beam power, relative peak power, divergence Angle, M2 factor and so on.
通过分析这些数据可以获得有关光束的一些参数，如光斑尺寸、相对光功率、相对峰值功率、发散角、M2因子等等。
The beam expander is an optical system composed by two or more components. It can change the size and divergence characteristics of the beams.
扩束镜是一种由两个或多个元件组成的光学系统，它能改变光束的大小和发散特性。
The expression of the beam momentum diffraction divergence is derived.
文中还给出了动量衍射发散度的表达式。
The patterns show that divergence of the emerging beam increases with the dihedral angle offset up to completely separate to six beams;
通过衍射图可以看出出射光束的发散程度随着角度误差的增加而增加，直至完全分离成六束光束。
The primary function of the optical transmit antenna is to collimate far-field divergence of the laser beam and reduce the size of the laser beam in .
由于大气衰减的影响，非视线散射大气光通信需要使用光学天线以提高对光信号的采集能力，进而增加通信距离。
The primary function of the optical transmit antenna is to collimate far-field divergence of the laser beam and reduce the size of the laser beam in .
由于大气衰减的影响，非视线散射大气光通信需要使用光学天线以提高对光信号的采集能力，进而增加通信距离。
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