One-dimensional reflective diffuser for line beam shaper with microlens array homogenizer

Yung Neng Hsiao, Hau Ping Wu, Cheng-Huan Chen*, Yu Chung Lin, Min Kai Lee, Sung Ho Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


A laser beam shaping architecture based on a microlens array homogenizer has been exploited, in which the interference effect due to the coherency of the laser source deteriorates the uniformity. Moving diffusers have been considered as an effective way of averaging out the interference pattern. Because the uniformity is required in the line direction only, a one-dimensional reflective-type diffuser with a well-controlled diffusion angle has been proposed and prototyped. The diffuser is attached onto a rotating cylinder for movement in operation. The experiment demonstrates the effectiveness of the scheme, and a line beam with a uniformity of up to 92% has been achieved.

Original languageEnglish
Pages (from-to)715-718
Number of pages4
JournalOptical Review
Issue number5
StatePublished - 3 Oct 2014


  • laser beam shaping
  • one-dimensional reflective diffuser


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