beam spot diameter

基本解释

Good beam quality, close to the basement membrane, small spot diameter, perfect for ultra-fine marking.
光束质量好，接近基膜，光斑直径小，完美适用于超精细标记。
Lightwave propagation and mode field evolution are simulated by finite-difference beam propagation method so that the spot diameter is ascertained.
采用光束传播法数值模拟了锥形透镜光纤中的光波传输和模斑的演化，确定了锥形透镜光纤端面出射光斑的大小；
In order to obtain the laser beam with better beam quality, less spot diameter and higher power density in laser manufacturing (LM), Gaussian beam used in LM was transmitted and transformed.
为了获得光束质量较好、光斑尺寸较小、功率密度较高的、适合激光加工的激光束，对激光加工中的高斯光束进行传输与变换。