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Shaping laser diode beam into three rectangles by a DOE array to divide input wavefront
Shi, Zhendong1,2; Li, Miaofeng1; Yao, Jun1; Zhou, Chongxi1; Shi, Z. (likeszd8@163.com)
Source PublicationChinese Optics Letters
Volume10Issue:SUPPL.2Pages:S21405
2012
Language英语
ISSN16717694
DOI10.3788/COL201210.S21405
Indexed ByEi
Subtype期刊论文
AbstractTo resolve the variability of the intensity distribution and the divergence of the laser diode (LD) output beam in a beam shaping system, a diffractive optical element (DOE) array is proposed in LD beam shaping. This DOE array can divide the wavefront of input beam. All light diffracted by all DOE array units is super-positioned on the output plane, and the tolerance for the input beam is improved by this means. Using the above DOE array laser shaped method, three rectangles intensity distribution are realized from Gaussian beam with the diffraction efficiency of 90.5% and the uniformity of 96%. When the half divergence angle of the LD varies from 2° to 16° in slow and fast axis directions, respectively, the diffraction efficiency maintains to be approximate 90% and its uniformity is more than 95%. When the defocus of the lens to collimate LD beam varies from -32 to 32 μm, numerical experiments indicate that uniformity and the diffraction efficiency of the shaped beam by the DOE array do not vary. © 2012 Chinese Optics Letters.; To resolve the variability of the intensity distribution and the divergence of the laser diode (LD) output beam in a beam shaping system, a diffractive optical element (DOE) array is proposed in LD beam shaping. This DOE array can divide the wavefront of input beam. All light diffracted by all DOE array units is super-positioned on the output plane, and the tolerance for the input beam is improved by this means. Using the above DOE array laser shaped method, three rectangles intensity distribution are realized from Gaussian beam with the diffraction efficiency of 90.5% and the uniformity of 96%. When the half divergence angle of the LD varies from 2° to 16° in slow and fast axis directions, respectively, the diffraction efficiency maintains to be approximate 90% and its uniformity is more than 95%. When the defocus of the lens to collimate LD beam varies from -32 to 32 μm, numerical experiments indicate that uniformity and the diffraction efficiency of the shaped beam by the DOE array do not vary. © 2012 Chinese Optics Letters.
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/6790
Collection微细加工光学技术国家重点实验室(开放室)
Corresponding AuthorShi, Z. (likeszd8@163.com)
Affiliation1. State Key Laboratory of Optical Technologies for Micro Fabrication, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
Recommended Citation
GB/T 7714
Shi, Zhendong,Li, Miaofeng,Yao, Jun,et al. Shaping laser diode beam into three rectangles by a DOE array to divide input wavefront[J]. Chinese Optics Letters,2012,10(SUPPL.2):S21405.
APA Shi, Zhendong,Li, Miaofeng,Yao, Jun,Zhou, Chongxi,&Shi, Z. .(2012).Shaping laser diode beam into three rectangles by a DOE array to divide input wavefront.Chinese Optics Letters,10(SUPPL.2),S21405.
MLA Shi, Zhendong,et al."Shaping laser diode beam into three rectangles by a DOE array to divide input wavefront".Chinese Optics Letters 10.SUPPL.2(2012):S21405.
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