Based on the theory of the second intensity moment, the analytic expressions of the far-field divergence angle, near-field divergence angle, waist width and beam propagation factor of non-paraxial Lorentz beams are derived, and the transform characteristics are discussed.

In the case of ratio of the waist width to the wavelength is accord with diode laser, the non-paraxial Lorentz beam is more in accordance with actual situations of diode laser beams. 2.

在束腰宽度与波长比取值符合二极管激光器物理机制的情况下，非傍轴洛伦兹光束更符合二极管激光束的实际情况。

The far-field properties of few-and single-cycle ultrashort Gaussian pulsed beams with constant waist width are studied, and compared with those of ultrashort Gaussian pulsed beams with constant diffraction length.

研究了若干个甚至一个光周期数的等束宽超短高斯脉冲光束的远场特性，并与等衍射长度超短高斯脉冲光束作了比较。

Using the scalar quantity propagation formula, the numerical calculation had done. The far-field distributions of the Gaussian-Schell model beams with different waist width, correlation length and coherent length were worked out.

利用部分相干光的标量传播公式，对不同束腰宽度、相关长度和相干长度的高斯-谢尔模光束经光栅后的传输特性进行了数值计算，得到了多种情况下光束的远场强度分布。

By using the angular spectrum and complex analytic signal representations, the analytic propagation expression and its Fourier spectrum for ultrashort Gaussian pulsed beams with constant waist width in the far field are derived.

利用角谱法和复解析信号法推导出了等束宽超短高斯脉冲光束在远场的解析传输公式及其傅里叶谱。

Based on the Rayleigh-Sommerfeld diffraction integral, the far-field expression for ultrashort pulsed Gaussian beams with constant waist width in a dispersive medium is derived without involving the paraxial approximation.

从瑞利-索末菲衍射积分公式出发，在不作近轴近似的前提下，得出了等束宽脉冲高斯光束在色散介质中的远场公式。

We find from the simulation that when the GH shift is enhanced to the scale of beam waist width, obvious beam distortion appears, the reflected spot changes into a double-peak shape.

我们发现，当古斯汉欣位移被增强到束腰宽度的尺度，即出现了明显的形变，其表现为反射光斑内的能量分布出现双峰结构。

Park& powder – Twin – tip for all fakie tricks: moderate sidecut and enlarged waist width for more stability when landing big air maneuvers.

合理的腰部宽度适合做各种的花样动作以及在跳跃落地时稳定性很强。

For example, the waist width for Gaussian, Hermite-Gaussian, super-Gaussian, flatted-Gaussian and cosh-Gaussian beams are evaluated and compared.

以高斯光束、厄米高斯光束、超高斯光束、平顶高斯光束和双曲余弦高斯光束为例，计算比较了它们的束腰宽度。

The beam waist width, the waist location in free-space propagation and the M2-factor of EshG beams are also deduced.

得到了复宗量双曲正弦高斯光束在自由空间传输时束腰宽度和位置的解析表达式以及M2因子的表达式。

Waist width of Hermite-cosh-Gaussian beams

厄米-双曲余弦-高斯光束的束腰宽度

Using a complex analytical signal representation, the free-space propagation properties of ultrashort pulsed Bessel-Gauss beams whose waist width is independent of frequency are studied.

使用复解析信号法研究了束宽与频率无关的超短脉冲贝塞尔-高斯光束在自由空间的传输特性。

Methods By the matrix optical method, formulae of waist width and imaging distance of focused Gaussian beams through the coupling system are derived.

方法利用矩阵光学方法，推导了高斯光束经耦合系统聚焦后束腰宽度和像距的计算公式。

The influence of chirp coefficient and beam waist width over electron acceleration was also analyzed in this paper.

我们还对啁啾系数、光束腰宽对加速的影响进行了分析。

The far-field properties of ultrashort pulsed beams with constant waist width in free space

等束宽超短脉冲光束的远场特性

I'm a little teapot.

我是一把小茶壶。

Im a Little Teapot, short and stout.

我是一把小茶壶，矮矮胖胖。

Then the data correction and privacy amplification are given . 2.

并对数据纠错,保密增强做了整体的介绍.

One is the key, the constraint mechanism with restricted to correction.

其中约束机制是关键, 用制约来纠错.

He will correct the mistakes in this historical drama.

他要给这部历史剧纠错.

This study explored teachers corrective feedback, and its relationship with students uptake.

本文主要研究教师的纠错反馈(纠错)及其与学生的接纳之间的关系.