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Center off-axis tandem microlens arrays for beam homogenization
Cao, Axiu; Pang, Hui; Wang, Jiazhou; Zhang, Man; Shi, Lifang; Deng, Qiling
Source PublicationIEEE Photonics Journal
Volume7Issue:3Pages:2400207
2015
Language英语
ISSN1943-0655
DOI10.1109/JPHOT.2015.2433022
Indexed BySCI ; Ei
WOS IDWOS:000360358300012
Subtype期刊论文
AbstractTandem 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.
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/7336
Collection微电子装备总体研究室(四室)
Corresponding AuthorShi, 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.
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