| 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
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| 刊名: | IEEE Photonics Journal
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| 出版日期: | 2015
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| 卷号: | 7, 期号:3, 页码:2400207 | | 学科分类: | Homogenization method - Laser beams - Microoptics - Optical instrument lenses
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| DOI: | 10.1109/JPHOT.2015.2433022
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| 通讯作者: | Shi, Lifang
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| 文章类型: | 期刊论文
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| 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
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| 项目资助者: | Applied Basic Research Project in Sichuan [A14K012]
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| 语种: | 英语
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| WOS记录号: | WOS:000360358300012
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| ISSN号: | 1943-0655
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| Citation statistics: |
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| 内容类型: | 期刊论文
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| URI标识: | http://ir.ioe.ac.cn/handle/181551/7336
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| Appears in Collections: | 微电子装备总体研究室（四室）_期刊论文
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| 2015-2011.pdf（828KB） | 期刊论文 | 作者接受稿 | 开放获取 | | View
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作者单位: | Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, China
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| 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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