Bragg condition

In the end , the properties of volume holograms and the filtering principles of multiple photorefractive volume gratings are discussed by using volume holograms theory and Bragg condition .

最后从体全息理论出发，结合布拉格条件，讨论了多重体全息相位栅的滤波原理。

If the corrugated wall in FEL interaction region satisfies the Bragg condition , its distributed feedback mechanism creates a Brgg cavity , like a conventional laser .

如果激光器的互作用区漂移管波纹满足布拉格条件，则其分布反馈机理构成了类似于普通激光谐振腔的布拉格腔。

The holographic lens , which is designed according to Bragg condition to eliminate aberrations , has both high efficiency and low aberration , and can be used in a certain narrow-band condition .

该方法采用双片离轴全息透镜复合，按使用条件在布喇格条件下进行消三级像差设计，制作设计的全息透镜具有高衍射效率高、像差小的特点，可以满足任意给定的窄带光场合。

The approximation conditions under Bragg condition and deviating Bragg condition are analyzed with the judgment standards of the correlation of diffraction efficiency curves or the difference of diffraction efficiencies between two theories .

论文以两种理论的衍射效率特性曲线的相关或衍射效率计算差别作为判断标准，分析在Bragg条件和偏离Bragg条件下的Kogelnik耦合波理论的近似条件。

By controlling the magnitude of the applied electric field , the readout beam can satisfy or deviate the Bragg condition , which makes the diffraction efficiency be 1 or 0 , and thus realize the exchange or bypass operation of the switch .

通过控制读出光栅时外加电场的大小使读出光满足或偏离布拉格条件，从而控制衍射效率为1或0，实现开关的交换和直通操作。

The numerical calculations show that the grating , as a frequency scan antenna , can produce perfect blazing in a wide range of incident angle only through adjusting the size of width and depth of the groove no matter Bragg condition is satisfied or not .

对这种光栅作为频率扫描天线的计算显示出，不论满足或不满足布喇格条件，在较宽的角度范围内入射，经调节槽宽和槽深都可获得理想的耀射。

Through analysis of Bragg diffractive condition , the optical transmitting direction of acoustic wave and photonic wave is demonstrated . Design parameters of waveguide AO Bragg modulator are achieved .

其次，通过对Bragg衍射条件的分析，论证了声波及光波在介质中的最佳传播方向，并给出了波导声光Bragg调制器件的设计参数。

Based on the analytic expression of electromagnetic field solution of helical symmetric dielectric material , the paper presents the relationship between spectral reflectivity and birefringence of chiral liquid crystal , and the blue shift of Bragg reflection in the condition of oblique incidence .

依据分子呈螺旋型排列的介质的电磁场解计算了给定厚度的手性液晶的光谱反射率与其双折射的关系，依据布拉格反射的干涉条件计算了斜入射光的布拉格反射光谱的蓝移。

Refraction rate and cycle modulate depth of optical fibre Bragg grating is constant . For the light wave of grating , the light wave of Bragg condition will be all reflected ; other light waves will be passed .

光纤Bragg光栅的折射率周期及调制深度均为常量，对于入射到Bragg光栅的光波，满足Bragg条件的光波都将被反射，其余光波通过。