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1)  second diffraction
二级衍射
1.
Through calculating the second diffractive efficiency,analyzed the second diffraction disturbance to the spectrograph and provided the method to suppress the disturbance.
通过计算光栅的二级衍射光谱,对二级光谱对光谱仪分光的干扰进行分析,并提出了相应的抑制措施。
2)  Second order peak
二级衍射峰
3)  zero-order diffraction
零级衍射
1.
Numerical study on zero-order diffraction characteristics of submicron gratings;
亚微米光栅零级衍射特性的数值研究
2.
The subtraction method of joint power spectrum of reference object and target object from the power spectrum of reference object can smooth down the zero-order diffraction and improve the recognition ability of joint transform correlator.
联合变换相关器的零级衍射光斑会影响相关峰探测。
4)  diffraction orders
衍射级
5)  multiorder diffraction
多级衍射
1.
In this paper,a method of holographic grating with multiorder diffraction made by using Mach Zehnder interferometer in two steps is presented.
提出用 Mach- Zehnder干涉仪两步记录制作具有多级衍射的全息光栅方法。
6)  diffractive order
衍射级次
1.
The finiteness of diffractive order of the phase grating and the relations between the diffractive orders and the incident angle are discussed by means of the vector diffraction theory.
用矢量衍射理论讨论了位相光栅衍射级次的有限性及其与入射角的关系,得出的结论与用光程方法得出的结果一致,作出了在不同入射角条件下各衍射级次的分布图,给出了求解各级衍射波方向的公式。
补充资料:二次衍射装置
分子式:
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性质:在平面光栅摄谱仪内设一反射镜,可将已被光栅色散过的一次光线,再反射到同一光栅上作第二次衍射。经过两次衍射后线色散率可增加一倍。由于光栅有闪耀波长,虽然线色散率增加,但闪耀波长已经改变。若利用一次衍射的二级光谱进行二次衍射,就可在一级光谱的闪耀区中摄得线色散率加倍,而又有较强的光谱。

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