• We have also discussed the effect of the beam divergence on the second harmonic conversion efficiency.

    讨论了泵浦束发散角谐波转换效率的影响

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  • The experimental results of energy threshold, output energy and beam divergence of the first Stokes are present.

    文中给出一阶斯托克斯光泵浦阈值输出能量光束质量实验数据。

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  • The problem how to select optimum of signal-to-noise ratio and laser beam divergence for laser range-finder is studied.

    研讨激光测距激光发散如何选取最佳值问题

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  • Since the severe asymmetry of optical field and beam divergence degrade the coupling efficiency, the waveguide structure optimizing needed.

    就要提高激光器出射对称性,减小光的散射角,这需要提高对激光器波导层的结构优化

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  • 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.

    系统发射探测光束发散角较大,信噪比较,且光束扫过目标可能出现条纹状信号过程

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  • According to acquisition and tracking strategy and laser detection theory, an expression of the best Angle of beam divergence under direct detection is provided.

    根据捕获跟踪策略激光检测理论给出直接探测情况最佳光束发散表示式

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  • 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.

    于光热效应功率固体激光器输出参数光束发散、输出功率等会发生变化

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  • 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.

    报道一种具有垂直集成无源波导的耦合波导结构量子激光器理论设计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

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  • 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.

    结果展示引出光学主要取决于引出导流系数电势分布,在一定条件下获得发散度离子束

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  • 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.

    激光雷达系统作用距离下列因素决定:脉冲能量、脉冲宽度光束发散大气衰减目标反射率接收机灵敏度等。

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  • 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.

    发明方法中的一个位置测量即可,因此本发明方法方便实现光束发散实时测量

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  • 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.

    本文研究激光束发散度放大倍数的关系提出了非稳设计原则

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  • Another important application of diffraction theory is the study of the far field divergence Angle of a collimated light beam.

    衍射理论另一个重要应用就是研究直光束的发散

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  • 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,聚焦中空光束一定角度发散,它的DSS变得越来越大强度变得越来越弱。

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  • A beam of high radiant power will have high divergence.

    辐射功率光束高的发散度

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  • 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光束许多稍有不同光线组成的,放出光束的特点是具有较大发散度

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  • 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.

    功率密度二阶方法用于截断光束克服光束质量因子发散困难

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  • 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.

    宽和远场发散相对误差系数绝对值增加光束数的减小而增加;

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  • 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.

    理论分析计算机仿真都表明敏感器测量精度和焦距,下行信号角将影响激光链路成功建立概率

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  • The correlated spontaneous up conversion and down conversion photons exhibits a high beam brightness, small spatial divergence, and broad spectral tunability.

    相关自发参量上转换转换光子表现光束亮度高空间发散以及在很宽频谱范围内可调谐等特点。

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  • 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.

    获得激光增益条件下讨论了入射电子束最大许可发散其它物理参数之间关系

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  • 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.

    简述激光光束基本参数特性介绍了采用CCD进行激光发散测量的基本原理装置

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  • The divergence Angle of light beam was measured with the method of CCD imaging and computed by second moment method.

    通过CCD成像方法对准直后光束发散进行测量,利用二阶矩算法计算出光束发散角。

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  • It has small body, optics, clear beam and low divergence and favorable verticality and high accuracy and industrial strength.

    体积小;光学透镜光线清晰发散度垂直度好,精确度工业适用性强。

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  • 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一些参数光斑尺寸相对功率、相对峰值功率、发散M2因子等等

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  • The beam expander is an optical system composed by two or more components. It can change the size and divergence characteristics of the beams.

    束镜一种两个多个元件组成光学系统改变光束的大小发散特性

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  • The expression of the beam momentum diffraction divergence is derived.

    文中还给出了动量衍射发散表达式

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  • 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光束发散程度随着角度误差增加而增加,直至完全分离成六束光束。

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  • 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 .

    由于大气衰减影响,非视线散射大气光通信需要使用光学天线提高对光信号的采集能力,进而增加通信距离。

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  • 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 .

    由于大气衰减影响,非视线散射大气光通信需要使用光学天线提高对光信号的采集能力,进而增加通信距离。

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