光程差

In the case of double line spectrum, modulation ratio changes as a periodic function of light-path difference with the period of λ〓/△λ.

在有一定宽度的谱线情况下，调制比随光程差的增加而衰减，因而存在一个最大光程差λ〓/△λ。

Based on the stress optics law and the theory of elasticity thermal stress, the relation between optic path difference of double refraction and main stress difference is derived.

基于应力光学定律和弹性热应力理论，导出双折射的光程差与主应力差之间的关系。

In order to study the nonuniform temperature rise and thermal effect in the Yb:YAG crystal,based on the theory of semi-analytical thermal analysis and working characteristic analysis of Yb:YAG microchip with super-Gaussian beam end-pumping and back-face cooling,a new solution of heat conduction equation was introduced and the general expressions of temperature field,thermal distortion field and additional optical path differences of Yb:YAG microchip were obtained respectively.

为了研究抽运光在Yb：YAG晶体内产生的非均匀性温升以及引起的热效应问题，以半解析热分析理论为基础，结合超高斯光束端面抽运、背向冷却Yb：YAG微片工作特点分析，采用热传导方程一种新的求解方法，得出了Yb：YAG微片内部温度场、热形变场、附加光程差的半解析计算表达式。

Using this method, the optical path difference can be detected accurately, if put medium to the light path. Therefore, it is a new method to measure medium refractive index.

如果在光路中放入介质，用这种方法可以很精确地测量出由此引人的光程差，并给出了一个测量介质折射率的新方法。

In this study, we proposed a common-path method to reduce the inaccuracy of the phase analysis due to the optical path difference and the disturbance from the external environment.

本研究提出共光程的方式来减少光程差及外在环境扰动对於相位分析时所造成的误差。

With the compensator in place any optical path difference arises from the actual path difference.

有了补偿板之后，任何光程差都只由实际程差引起。

Week 5 Optical path, difference of optical path, Yang interference of two slits, film interference.

第5周 光程，光程差；杨氏双缝干涉，薄膜干涉。

The phase tracking principle of source-contained homodyne detection is researched, the frame diagram for phase detection and experimental results are given.

介绍了一种新型的光纤电压传感器结构和工作原理，分析了系统中椭圆芯双模光纤的传输模式和模间相干光斑的变化，采用熔接的方式进行相干光接收来获得正交相位漂移信号，根据模间群折射率差与光程差的关系设计调整光纤的长度，依据石英晶体和空气的绝缘强度进行传感光纤匝数设计，讨论了含源零差探测法的相位跟踪原理，给出了相位检测框架图及实验结果，分析表明该设计方案能达到相位跟踪的目的。

By means of the different interference phase formed by light beams with different wavelengths in the same light path difference and the superposing of interference signals of different spectral components, ultimate interference signal is formed.

振动系统产生干涉光路的光程差，形成干涉信号的调制相位差，通过不同光波长在相同光程差条件下形成的不同干涉相位，通过对不同光谱分量的干涉信号叠加，形成最终的干涉信号。

It is found that the changes resulted from the inclination of the moving mirror consists of three parts: the stationary OPD due to the optical beam deflection,the offset OPD due to the different ray in the direction perpendicular to the optical axis,and the offset from the center of the deflected beam to the optical axis.

结果表明，光束偏转带来的误差分为三部分：光束偏转导致整体增加的恒定光程差，垂直光轴方向因不同光线而引入的偏移光程差以及偏转光束中心相对于光轴的偏移量。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。