相位

Therefore, it is useful to make further study on heightener of reflectivity and applying in laser system with narrow pulse-width less than 30ns and high repetition rate more than 100Hz for space -communication and laser-detect.In this paper, a new theoretical model is established for optical fiber pumped by broadband laser.

而对光纤相位共轭器而言，关键问题是如何突破SBS反射率低于60％的瓶颈，并应用到重复频率大于100Hz、脉冲窄于30ns的激光系统中获得较高的稳定性和较好的相位共轭效果。

A mathematical model is setup for the phase interpolator and we perform a precise analysis using this model.

为相位插值器建立了数学模型并基于模型对相位插值器在数学域进行了详细的分析。

A mathematical model issetup for the phase interpolator and we perform a precise analysis using this model.

为相位插值器建立了数学模型并基于模型对相位插值器在数学域进行了详细的分析。

The main factors effecting on exploration precision of surface wave are analyzed in the light of calculation of phase velocity of surface wave; the merits and demetits of common computing methods for phase velocity between stations and their applied range are discussed and calculation of interstation Green's function for correcting phase is put forward to get the precise phase difference between two stations.

分析了影响面波勘探精度的主要因素，针对计算面波相速度的精度问题，讨论了常用测量台间面波相速度方法的优缺点及其适用范围，并提出通过测量台间格林函数进行相位校正，以得到两台之间的精确相位。

The main factors effecting on exploration precision of surface wave are analyzed in the light of calculation of phase velocity of surface wave; the merits and demetits of common computing methods for phase velocity between stations and their applied range are discussed and calculation of interstation Green's function for correcting phase is put forward to get the precise phase difference between two stations.

分析了影响面波勘探精度的主要因素，针对计算面波相速度的精度问题，讨论了常用测量台间面波相速度方法的优缺点及其适用范围，并提出通过测量台间格林函数进行相位校正，以得到两台之间的精确相位。以合成的高频理论地震图作为记录信号，并在理论地震图上叠加了 2 0 %的随机噪声，利用这些方法分析理论信号，数字实验表明：在相干频率范围内，格林函数方法能够精确测量台间相速度，而互相关法和窄带通滤波互相关法所得结果较为离散。

In this paper,the phase distortion has been discussed,by using different reconstruction beam to reconstruct digital holographic image of 3D ob- ject in lensless Fourier holography.

本文研究了离轴无透镜傅里叶变换数字全息中，用非原参考光再现三维物体而引入的相位畸变问题，通过详细的理论分析，得出相应的相位畸变表达式。

Noncollinear phase matching is less exigent and can be related to a larger effective coefficient than collinear PM.

本文对三波参量作用中相位匹配，特别是非共线相位匹配的特性从理论上和实验上作了深入的研究。

The quasi-phase-matched conditions of collinear and noncollinear optical parametric generator are analyzed and the deflection angle is achieved.

分析了共线和非共线光学参量产生器的准相位匹配条件，得出满足准相位匹配条件的光偏折角。

The results are used to the values obtained are in good agreement with the experimental results, similarly calculation of noncritical phase matching temperature for SHG gives a result which also agrees with the experimental result fairly well.

用此结果计算室温的二次谐波I类临界相位匹配角与实验值符合得很好，又计算二次谐波的非临界相位匹配温度，其结果也与实验值较符合。标签镁铌酸锂晶体折射率测量 MgO LiNbO3 crystal refractive measurements

Physical and chemic properties of Cr:LiSAF aresummed up. The characteristic of KN crystal is analyzed. At normal temperature, KN crystal can obtain noncritical phase match of 90 at wavelength of 857nm.

对Cr：LiSAF晶体的物理和光学性质进行了总结，同时对KN晶体各个面内的相位匹配角度和有效非线性系数进行了计算并对其相位匹配特性做了分析。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷