• 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了直接探测情况下最佳光束发散表示式

    www.dictall.com

  • 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.

    于光泵浦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

    dict.cnki.net

  • 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时,比较光束目标可能出现条纹状信号过程

    dict.cnki.net

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

    讨论浦束发散二次谐波转换效率影响

    dict.cnki.net

  • 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

    www.dictall.com

  • 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.

    结果展示引出束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

    dict.cnki.net

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

    文中给出斯托克斯泵浦阈值输出能量光束质量的实验数据

    dict.cnki.net

  • 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腔的放大倍数关系,并提出了设计原则

    dict.cnki.net

  • 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得到有效降低

    www.dictall.com

  • 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

    www.fabiao.net

  • 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,因此发明方法方便实现光束发散实时测量

    ip.com

  • 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,需要提高激光器波导层的结构优化

    dict.cnki.net

  • Electron beam in accelerators can exceed the transferring hole as a result of beam divergence or eccentricity.

    加速器电子束传输过程中束流传输截面发散偏离中心超出尺寸一定传输器件。

    dict.cnki.net

  • It is shown that a larger field-of-view can significantly increase the system performance while an increase of transmitter beam divergence does not make any difference.

    数值计算结果表明增大接收机视场可以提高探测信号功率,从而有效增大系统信噪

    www.jgjs.net.cn

  • We obtained a very simple result using the diaphragm edge length to describe the beam diffraction divergence.

    这个周界来描述远场衍射发散得到结果十分简单、直观。

    www.dictall.com

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

    体积光学透镜光线清晰发散度,垂直精确度工业适用性

    www.qiyeshangpu.com

  • Furthermore, the parameters, such as beam width and divergence angle, are also introduced to describe propagation properties. The theoretical results agree with experimental results well.

    采用本文介绍的模型,选取合适的参数得到此类半导体激光器器件的远场发散强度分布,理论结果实测结果吻合

    www.say666.com

  • 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

    www.opticsjournal.net

  • Real-time processing of experiment data is difficult in measuring the divergence of Gaussian beam.

    高斯光束参数测量实验中,实验数据实时性处理是一个难题

    dict.cnki.net

  • With OTR method, the beam profile, energy, divergence are measured.

    据此,利用越辐射测量流脉冲束剖面能量发散角

    dict.cnki.net

  • 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空间发散以及在很频谱范围内可调谐等特点。

    www.fabiao.net

  • 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表明敏感器测量精度焦距下行信号影响激光链路成功建立概率

    dict.cnki.net

  • 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

    dict.cnki.net

  • 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了测量利用二阶算法计算出光束发散角。

    danci.911cha.com

  • And the divergence angle of pumping beam and the off axis pumping influenced t.

    方向泵浦光对参量光线宽的影响较大

    www.iciba.com

  • 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.

    宽和发散相对误差系数绝对值增加光束数的减小增加

    hplpb.com.cn

  • 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.

    宽和发散相对误差系数绝对值增加光束数的减小增加

    hplpb.com.cn

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