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用于激光加工中的矩形孔径Dammann光栅光束变换技术
Beam Transformation Technology of Pixellated Dammann Grating in Laser Processing
查看参考文献12篇
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文摘
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针对大功率激光加工对光束空间强度分布的实际要求，提出了一种用二元光学元件对光束进行变换的方法，即利用均匀采样的矩形孔径Dammann光栅对激光高斯光束进行光束变换，可满足任意点阵分布的输出要求。以线状、均匀、环状和非均匀分布的光强输出为例，介绍了矩形孔径Dammann光栅光束变换技术的设计原理及实现方法，结果表明输出光强分布具有较高的衍射效率和均匀性。将均匀和非均匀分布的输出光束应用在激光加工技术的表面强化上，结果表明试样表面的硬度和耐磨性等力学性能均有提高并且强化层具有较好的均匀性。 |
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其他语种文摘
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A kind of binary optical elements is introduced to implement the transformation of laser beam for high power laser processing. The even sampling Pixellated Dammann grating is adopted to perform the Guassian beam transformation in order to obtain the given output spots. The principle and implementation of the beam transformation technology of pixellated Dammann grating is described with examples of the linear, even, annulus and uneven array. Results show that the output spots have high diffractive efficiency and uniformity. The application of the even and uneven array spot in the laser surface modification is investigated, showing the improvement of the hardness and the wear resistance of the sample surface, and the uniformity of the modified surface. |
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来源
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中国激光
,2008,35(11):1841-1847 【核心库】
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DOI
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10.3788/cjl20083511.1841
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关键词
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二元光学
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矩形孔径Dammann光栅
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激光加工
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光束变换
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地址
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中国科学院力学研究所, 北京, 100190
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0258-7025 |
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学科
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物理学;电子技术、通信技术 |
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基金
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中国科学院知识创新工程重大项目
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文献收藏号
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CSCD:3430077
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参考文献 共
12
共1页
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1.
金国藩.
二元光学,1998:55-64
|
CSCD被引
11
次
|
|
|
|
|
2.
Vasara A. Binary surface-relief gratings for array illumination in digital optics.
Appl. Opt.,1992,31(17):3320-3336
|
CSCD被引
7
次
|
|
|
|
|
3.
N Sanner. Direct uhrafast laser micro-structuring of materials using programmable beam shaping.
Optics and Lasers in Engineering,2007,45(6):737-741
|
CSCD被引
5
次
|
|
|
|
|
4.
M R Taghizadeh. Design and fabrication of diffractive elements for laser material processing applications.
Optics and Lasers in Engineering,2000,34:289-307
|
CSCD被引
2
次
|
|
|
|
|
5.
Heinemann S. Computer generated beam shaping and focusing optical elements for laser material processing.
Opt. Commun.,1995,119:613-622
|
CSCD被引
1
次
|
|
|
|
|
6.
F B McCormick. Generation of large spot arrays from a single laser beam by multiple imaging with binary phase gratings.
Optical Engineering,1989,28(4):299-304
|
CSCD被引
2
次
|
|
|
|
|
7.
谷雨. 对达曼光栅进行二维扩展的矩形孔径光栅设计.
激光杂志,2005,26(3):23-24
|
CSCD被引
1
次
|
|
|
|
|
8.
Shaoxia Li. High-power laser beam shaping by inseparable two-dimensional binary phase gratings for surface modification of stamping dies.
Optics and Lasers in Engineering,2008,46:508-513
|
CSCD被引
3
次
|
|
|
|
|
9.
高春林. 具有特殊衍射强度分布的二元位相光栅设计.
中国激光,2001,28(4):365-368
|
CSCD被引
6
次
|
|
|
|
|
10.
S Kirkpatrick. Optimization by simulated annealing.
Science,1983,220(4598):671-680
|
CSCD被引
1021
次
|
|
|
|
|
11.
Y Chen. Kaplan. Laser surface modified ductile iron by pulsed Nd:YAG laser beam with two-dimensional array distribution.
Applied Surface Science,2005,245:316-321
|
CSCD被引
6
次
|
|
|
|
|
12.
巴发海. 球铁材料脉冲激光表面强化的实验研究.
中国激光,2003,30(7):663-667
|
CSCD被引
12
次
|
|
|
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