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题名:
Shaping laser diode beam into three rectangles by a DOE array to divide input wavefront
作者: Shi, Zhendong1,2; Li, Miaofeng1; Yao, Jun1; Zhou, Chongxi1
刊名: Chinese Optics Letters
出版日期: 2012
卷号: 10, 期号:SUPPL.2, 页码:S21405
学科分类: Diffraction efficiency - Gaussian beams - Wavefronts
DOI: 10.3788/COL201210.S21405
通讯作者: Shi, Z. (likeszd8@163.com)
文章类型: 期刊论文
中文摘要: 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.
英文摘要: 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.
收录类别: Ei
语种: 英语
ISSN号: 16717694
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/6790
Appears in Collections:微细加工光学技术国家重点实验室(开放室)_期刊论文

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作者单位: 1. 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:
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.
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