• Chinese Journal of Lasers
  • Vol. 9, Issue 1, 61 (1982)
[in Chinese]
Author Affiliations
  • [in Chinese]
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    [in Chinese]. [J]. Chinese Journal of Lasers, 1982, 9(1): 61 Copy Citation Text show less

    Abstract

    A new type of focusing lens capable of concentrating a laser beam into a ring has been developed and the designed and the fabrication and experimental results are described.