Title: One-Dimensional Reflective Diffuser for Line Beam Shaper with Microlens Array Homogenizer
Authors: Hsiao, Yung-Neng
Wu, Hau-Ping
Chen, Cheng-Huan
Lin, Yu-Chung
Lee, Min-Kai
Liu, Sung-Ho
Department of Photonics
Keywords: laser beam shaping;one-dimensional reflective diffuser
Issue Date: 1-Sep-2014
Abstract: 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. (C) 2014 The Japan Society of Applied Physics
URI: http://hdl.handle.net/11536/123990
ISSN: 1340-6000
Volume: 21
Begin Page: 715
End Page: 718
Appears in Collections:Articles

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