同时得出了不同离焦量横截面上中空环形光斑的大小和占空比之间的关系。
At the same time we can get the relationship between hollow circular laser beam and duty circle at different defocusing cross section.
通过实验在高增益的TEA CO_2激光器中，得到了基模环形光斑输出。
The ring output spot of the fundamental mode is obtained from a high gain TEA CO2 laser by experiment.
该方法利用环形激光束照射到深孔内膛表面上形成的环形光斑图像进行检测。
This method employs the ring light spot image formed by a ring laser projected onto the inner surface.
讨论环形孔径高斯光束的远场光斑能量分布，并给出拟合表达式。
The energy distribution of far field spot for annular aperture Gaussian beam is discussed and the fitting expression is given.
送粉落点与光斑相对位置会影响环形件的内外壁品质，粉末偏向光斑内侧，环形件外壁光滑；
The relative position between powder sending landing and spot can effect the quality of ring sample, if powder locates inside of spot, the outside wall of ring sample is smooth;
讨论了环形孔径高斯光束的远场光斑能量分布，并给出了拟合表达式。
The far-field irradiance distribution of a Gaussian beam which is transmitted from telescope with certain center obscure is researched in this paper.
讨论了环形孔径高斯光束的远场光斑能量分布，并给出了拟合表达式。
The far-field irradiance distribution of a Gaussian beam which is transmitted from telescope with certain center obscure is researched in this paper.
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