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	Design Method for the Near-field Diffractive Optical Elements with Large Diffraction Angle Based on the Rayleigh-Sommerfeld Diffraction Theory
	Li, Jing1,2; Wu, Peng1; Yang, Zheng1; Zheng, Qian-Ying1,2; Li, Tao-Jie3; Xiang, Yang1; Du, Chun-Lei1,2; Yin, Shao-Yun1,2
	2017
摘要	A novel method is presented for designing the near-field diffraction optical element (DOE) with large diffraction angle based on the Rayleigh-Sommerfeld diffraction theory. The relation of space position of sampling points between the DOE surface and the receiving surface is studied. The forward and inverse diffraction calculation methods without far-field and paraxial approximation are used. The design method of near-field DOE with large diffraction is obtained by modifying the traditional Gerchberg-Saxton algorithm. Compared with the traditional design method and the existing large diffraction angle design method, the proposed method shows significant advantages on designing the same "[Chinese Character]" Shape target pattern. The simulation results show that the target pattern in the near field with large diffraction angle is accurately reconstructed by using the proposed method, while the reconstructed light fields with the other two methods shows dramatical distortion or fuzziness. © 2017, Science Press. All right reserved.
DOI	10.3788/gzxb20174611.1122003
发表期刊	Guangzi Xuebao/Acta Photonica Sinica
ISSN	10044213
卷号	46期号:11
通讯作者	Yin, Shao-Yun (ysy@cigit.ac.cn)
收录类别	EI
语种	中文