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Proceedings Paper

Shape the unstable laser beam using diffractive optical element array
Author(s): Yuan-yuan Li; Chuan-kai Qiu; Pan Li; Tingwen Xing; Wumei Lin; Chong-xi Zhou
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Paper Abstract

The structure combining the microlens and DOE is not sensitive to the incident beam and can control the overall shape profile flexibly. So that the structure called DOE array is designed in this paper in order to shape the unstable laser beam to the four polar uniformity distribution. The paper gives the principle of the DOE array and the design process. The array element determines the profile of the output beam. It is designed using the G-S algorithm and the Adaptive Addition algorithm (A-A). The number of the DOEs is optimized and analyzed. The simulative diffraction efficiencies are 89% and non-uniformities are less than 3% when the incident beams are Gaussian, supper-Gaussian, paraboloid and random distributions. In experiment, diffraction efficiency of 77% and maximum non-uniformity of 5.6% are got on the condition of the different input laser beam. So the effect on the instability of the incident beam could be decreased.

Paper Details

Date Published: 17 November 2010
PDF: 9 pages
Proc. SPIE 7848, Holography, Diffractive Optics, and Applications IV, 78481X (17 November 2010); doi: 10.1117/12.868788
Show Author Affiliations
Yuan-yuan Li, Institute of Optics and Electronics (China)
Chuan-kai Qiu, Institute of Optics and Electronics (China)
Pan Li, Institute of Optics and Electronics (China)
Tingwen Xing, Institute of Optics and Electronics (China)
Wumei Lin, Institute of Optics and Electronics (China)
Chong-xi Zhou, Institute of Optics and Electronics (China)


Published in SPIE Proceedings Vol. 7848:
Holography, Diffractive Optics, and Applications IV
Yunlong Sheng; Chongxiu Yu; Linsen Chen, Editor(s)

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