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Volume 11
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10.3390/app11031116
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Article

Alternative Design of Binary Phase Diffractive Optical Element with Non-π Phase Difference

by
Cheng Xu
1,2,
Hui Pang
2,*,
Axiu Cao
2 and
Qiling Deng
2
1
University of Electronic Science and Technology of China, Chengdu 610041, China
2
Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2021, 11(3), 1116; https://doi.org/10.3390/app11031116
Submission received: 6 January 2021 / Revised: 22 January 2021 / Accepted: 24 January 2021 / Published: 26 January 2021
(This article belongs to the Section Optics and Lasers)
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Abstract

It was found that binary phase diffractive optical element (DOE) with non-π phase difference had higher diffraction efficiency and adjustable zero-order intensity than a 0-π one. However, existing design methods are all based on the simulated annealing algorithm and thus computationally expensive. In this paper, a simple and efficient method using the iterative Fourier transform algorithm (IFTA) is proposed. In this method, the target pattern is first modified via reducing the zero-order intensity. Then, the IFTA is adopted to design the conventional 0-π DOE. Subsequently, the phase distribution remains unchanged and the phase difference is carefully adjusted to increase the zero-order intensity so that the reconstructed pattern is consistent with the target. To verify this method, several typical DOEs for beam splitting were designed and fabricated, and the result showed that the proposed method is effective.
Keywords: diffractive optics; diffractive optical element; beam splitting diffractive optics; diffractive optical element; beam splitting

Share and Cite

MDPI and ACS Style

Xu, C.; Pang, H.; Cao, A.; Deng, Q. Alternative Design of Binary Phase Diffractive Optical Element with Non-π Phase Difference. Appl. Sci. 2021, 11, 1116. https://doi.org/10.3390/app11031116

AMA Style

Xu C, Pang H, Cao A, Deng Q. Alternative Design of Binary Phase Diffractive Optical Element with Non-π Phase Difference. Applied Sciences. 2021; 11(3):1116. https://doi.org/10.3390/app11031116

Chicago/Turabian Style

Xu, Cheng, Hui Pang, Axiu Cao, and Qiling Deng. 2021. "Alternative Design of Binary Phase Diffractive Optical Element with Non-π Phase Difference" Applied Sciences 11, no. 3: 1116. https://doi.org/10.3390/app11031116

APA Style

Xu, C., Pang, H., Cao, A., & Deng, Q. (2021). Alternative Design of Binary Phase Diffractive Optical Element with Non-π Phase Difference. Applied Sciences, 11(3), 1116. https://doi.org/10.3390/app11031116

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