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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
Indexed BySCI
WOS IDWOS:000360358300012
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.
KeywordBeam Shaping Microlens Array Homogenization Off-axis
WOS Research AreaEngineering ; Optics ; Physics
WOS SubjectEngineering, Electrical & Electronic ; Optics ; Physics, Applied
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
AffiliationChinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R 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).
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).
MLA Cao, Axiu,et al."Center Off-Axis Tandem Microlens Arrays for Beam Homogenization".IEEE PHOTONICS JOURNAL 7.3(2015).
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