Broadband lens and graphene/silicon photodiode for wide spectral imaging

Jiafu Wang; Yue Dai; Xiaoxue Cao; Zongwen Li; Xinyi Xu; Srikrishna C. Bodepudi; Wenzhang Fang; Yance Chen; Yaqi Ren; Xiujun Hao; Xujie Lu; Hui-Liang Shen; Zheng Li; Xin Yuan; Huan Hu; Qigong Zhang; Zhi-Pei Sun; Yang Xu

doi:10.1364/OL.506369

Optics Letters
Vol. 49,
Issue 3,
pp. 518-521
(2024)
•https://doi.org/10.1364/OL.506369

Broadband lens and graphene/silicon photodiode for wide spectral imaging

Jiafu Wang, Yue Dai, Xiaoxue Cao, Zongwen Li, Xinyi Xu, Srikrishna C. Bodepudi, Wenzhang Fang, Yance Chen, Yaqi Ren, Xiujun Hao, Xujie Lu, Hui-Liang Shen, Zheng Li, Xin Yuan, Huan Hu, Qigong Zhang, Zhi-Pei Sun, and Yang Xu

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Jiafu Wang, Yue Dai, Xiaoxue Cao, Zongwen Li, Xinyi Xu, Srikrishna C. Bodepudi, Wenzhang Fang, Yance Chen, Yaqi Ren, Xiujun Hao, Xujie Lu, Hui-Liang Shen, Zheng Li, Xin Yuan, Huan Hu, Qigong Zhang, Zhi-Pei Sun, and Yang Xu, "Broadband lens and graphene/silicon photodiode for wide spectral imaging," Opt. Lett. 49, 518-521 (2024)

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Table of Contents Category
- Thin Films and Other Optical Design and Fabrication
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About this Article
History
- Original Manuscript: November 10, 2023
- Revised Manuscript: December 8, 2023
- Manuscript Accepted: December 21, 2023
- Published: January 17, 2024

Abstract

We designed a broadband lens along with a graphene/silicon photodiode for wide spectral imaging ranging from ultraviolet to near-infrared wavelengths. By using five spherical glass lenses, the broadband lens, with the modulation transfer function of 0.38 at 100 lp/mm, corrects aberrations ranging from 340 to 1700 nm. Our design also includes a broadband graphene/silicon Schottky photodiode with the highest responsivity of 0.63 A/W ranging from ultraviolet to near-infrared. By using the proposed broadband lens and the broadband graphene/silicon photodiode, several single-pixel imaging designs in ultraviolet, visible, and near-infrared wavelengths are demonstrated. Experimental results show the advantages of integrating the lens with the photodiode and the potential to realize broadband imaging with a single set of lens and a detector.

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Supplementary Material (1)

Name	Description
Supplement 1	Lens design, lens material and surface, optimization of the lens, tolerance analysis, transmission curve, and fabrication process of the Gr/Si PD.

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