In this paper a new measure method is described — the technique of thin beam scan to measure the distributing of refraction ratio of section plane of polymer optical fiber.
本文主要研究了一种新的测量方法——细光束扫描来测量光线预制棒的折射率分布。
Under the condition of optical breakdown, a high ratio of laser to sound energy conversion can be obtained with a large laser beam waist radius.
在保证光击穿的条件下，选择较大的激光焦斑半径，可提高光声能量转换效率。
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