| Center off-axis tandem microlens arrays for beam homogenization | |
| Cao, Axiu; Pang, Hui; Wang, Jiazhou; Zhang, Man; Shi, Lifang; Deng, Qiling | |
| Source Publication | IEEE Photonics Journal
 |
| Volume | 7Issue:3Pages:2400207 |
| 2015 | |
| Language | 英语 |
| ISSN | 1943-0655 |
| DOI | 10.1109/JPHOT.2015.2433022 |
| Indexed By | SCI ; Ei |
| WOS ID | WOS:000360358300012 |
| Subtype | 期刊论文 |
| Abstract | 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.; 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. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ioe.ac.cn/handle/181551/7336 |
| Collection | 微电子装备总体研究室（四室） |
| Corresponding Author | Shi, Lifang |
| Affiliation | Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, China |
| Recommended Citation GB/T 7714 | 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. |
| APA | Cao, Axiu,Pang, Hui,Wang, Jiazhou,Zhang, Man,Shi, Lifang,&Deng, Qiling.(2015).Center off-axis tandem microlens arrays for beam homogenization.IEEE Photonics Journal,7(3),2400207. |
| MLA | Cao, Axiu,et al."Center off-axis tandem microlens arrays for beam homogenization".IEEE Photonics Journal 7.3(2015):2400207. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 2015-2011.pdf（828KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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