Laser Solutions (한국레이저가공학회지)
- Volume 15 Issue 2
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- Pages.11-14
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- 2012
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- 1229-0963(pISSN)
Control of Intensity Distribution Profile of Laser Beam using Beam Shaping Mask with Random Array Slits
빔셰이퍼 마스크를 이용한 레이저 빔의 강도 분포 제어
- Oh, Jae-Yong (ERC/NSDM, Pusan National University) ;
- Park, Deog-Su (Institute of Bio.Physio Sensor Technology, Pusan National University) ;
- Shin, Bo-Sung (ERC/NSDM, Pusan National University)
- Received : 2012.06.07
- Accepted : 2012.06.26
- Published : 2012.06.30
Abstract
In this paper, we have made a proposal concerning the beam shaping mask(BSM) using random-array slits to control intensity distribution profile of laser beam and demonstrated its proprieties experimentally. When a lot of slits are set out irregularly, diffraction patterns of light does not appear but granularity patterns as a bundle of fibers appear. Intensity distribution profile is controlled by densities distribution of circular slits arrayed randomly because the number of slits and its area means amount of light energy through BSM. Namely as the number of slits in high intensity area is increased and that in low intensity area decreased, amount of light energy is same over all local parts. So gaussian intensity distribution could be changed to flat-top.
Keywords