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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
卷号: 7, 期号:3, 页码:2400207
学科分类: Homogenization method - Laser beams - Microoptics - Optical instrument lenses
DOI: 10.1109/JPHOT.2015.2433022
通讯作者: Shi, Lifang
文章类型: 期刊论文
中文摘要: 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. © 2015 IEEE.
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. © 2015 IEEE.
收录类别: SCI ; Ei
项目资助者: Applied Basic Research Project in Sichuan [A14K012]
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/181551/7336
Appears in Collections:微电子装备总体研究室(四室)_期刊论文

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作者单位: Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, 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):2400207.
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