beam centroid 中文意思是什麼
beam centroid
解釋
束流重心-
Centroid position of focal spot of laser beam with aberration
畸變光束的焦斑質心位置 -
In order to analyze the effect of aberration of amplitude and phase of laser beam on centroid position of focal spot, based on the fraunhofer formula for light wave scaler diffraction theory, according to the definition of first order moment centroid position, the general expression of focal spot centroid position directly depending on the complex amplitude of near field is derived
摘要為分析振幅和相位發生畸變情況下光束焦斑質心位置所受的影響，以光波標量衍射理論中的夫瑯和費衍射公式為基礎，根據光斑強度分佈一階矩質心位置的定義，推導了直接依賴于光束近場復振幅分佈的焦斑質心位置的一般表達式。 -
First, we can use a camera to take over the laser beam at one end, record the position of the light - spot, and calculate the centroid of the light - spot, then, move the laser on the guide rail. we should rectify the screw until the position of light - spot is unchangeable. then, the camera should be moved to the other end of the guide rail
先用攝像機在一端接收激光器發出的光斑，並記錄光斑的位置，求出其質心，然後在導軌上移動激光器，調節頂絲，直到攝像機上的光斑位置不動為止，然後將激光器移到導軌另一端，讓激光器在導軌上滑動，調節頂絲，直到攝像機上光斑位置不變，而且與前一次測試時的位置在誤差允許的范圍內，則認為激光器直線性校準完畢。
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