Special Issue:
SPECIAL TOPIC — Optical field manipulation
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SPECIAL TOPIC—Optical field manipulation |
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Dynamic shaping of vectorial optical fields based on two-dimensional blazed holographic grating |
Xinyi Wang(王心怡)1, Yuan Gao(高源)1, Zhaozhong Chen(陈召忠)1, Jianping Ding(丁剑平)1,2,3, Hui-Tian Wang(王慧田)1,2 |
1 National Laboratory of Solid State Microstructures and School of Physics, Nanjing University, Nanjing 210093, China; 2 Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China; 3 Collaborative Innovation Center of Solid-State Lighting and Energy-Saving Electronics, Nanjing University, Nanjing 210093, China |
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Abstract We propose a vectorial optical field generation system based on two-dimensional blazed grating to high-efficiently generate structured optical fields with prescribed amplitude, phase, and polarization. In this system, an optimized blazed grating hologram is written on a spatial light modulator (SLM) and can diffract the majority of the incident light into the first-order diffractions of the x and y directions, which then serve as base vectors for synthesizing desired vector beams. Compared with the conventional cosine grating used in the previous work, the proposed two-dimensional, blazed grating has a much higher efficiency. Both computer simulation and optical experiment validate that a conversion efficiency up to 5 times that of the former work is achieved. Our method can facilitate applications of the optical field manipulation.
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Received: 30 August 2019
Revised: 23 October 2019
Accepted manuscript online:
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PACS:
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42.25.Fx
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(Diffraction and scattering)
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42.25.Ja
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(Polarization)
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42.40.Eq
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(Holographic optical elements; holographic gratings)
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42.79.Kr
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(Display devices, liquid-crystal devices)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 91750202 and 11534006) and the National Key R&D Program of China (Grant Nos. 2018YFA0306200 and 2017YFA0303700). |
Corresponding Authors:
Jianping Ding
E-mail: jpding@nju.edu.cn
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Cite this article:
Xinyi Wang(王心怡), Yuan Gao(高源), Zhaozhong Chen(陈召忠), Jianping Ding(丁剑平), Hui-Tian Wang(王慧田) Dynamic shaping of vectorial optical fields based on two-dimensional blazed holographic grating 2020 Chin. Phys. B 29 014208
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