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题名:
Center Off-Axis Tandem Microlens Arrays for Beam Homogenization
作者: Cao, Axiu; Pang, Hui; Wang, Jiazhou; Zhang, Man; Shi, Lifang; Deng, Qiling
刊名: IEEE PHOTONICS JOURNAL
出版日期: 2015-06-01
卷号: 7, 期号:3
关键词: Beam shaping ; microlens array ; homogenization ; off-axis
DOI: 10.1109/JPHOT.2015.2433022
文章类型: Article
英文摘要: Tandem microlens arrays are commonly used in many applications for the beam shaping of an arbitrary input intensity distribution into a top hat. Because of the periodic structure of the regular arrays, the output intensity distribution is modulated by equidistantly located sharp intensity peaks, which reduces the homogeneity of the beam. A new concept is proposed in this paper for tandem microlens arrays incorporating a center off-axis microlens array for the generation of an intensity far-field distribution with improved homogeneity under coherent illumination with the envelope of a top hat. The geometric centers of the sub-apertures are randomly offset by the light axis of the sub-lens in the array to break the periodicity. The influences of the various off-axis amounts on the homogeneity are discussed. The center off-axis microlens array has been fabricated, and the corresponding laser beam homogenizing experiment has been carried out. The results verify that a high homogeneity output intensity distribution can be achieved based on the presented method.
WOS标题词: Science & Technology ; Technology ; Physical Sciences
类目[WOS]: Engineering, Electrical & Electronic ; Optics ; Physics, Applied
研究领域[WOS]: Engineering ; Optics ; Physics
关键词[WOS]: LASER ; SYSTEM
收录类别: SCI
语种: 英语
WOS记录号: WOS:000360358300012
ISSN号: 1943-0655
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/3701
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China

Recommended Citation:
Cao, Axiu,Pang, Hui,Wang, Jiazhou,et al. Center Off-Axis Tandem Microlens Arrays for Beam Homogenization[J]. IEEE PHOTONICS JOURNAL,2015,7(3).
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