| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Temperature-responded tunable metalenses based on phase transition materials |
| Jing-Jun Wu(伍景军)1,2,3, Feng Tang(唐烽)3, Jun Ma(马骏)1,2, Bing Han(韩冰)1,2, Cong Wei(魏聪)1,2, Qing-Zhi Li(李青芝)3, Jun Chen(陈骏)3, Ning Zhang(张宁)3, Xin Ye(叶鑫)3,†, Wan-Guo Zheng(郑万国)‡4,‡, and Ri-Hong Zhu(朱日宏)1,2,§ |
1 School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
2 MIIT Key Laboratory of Advanced Solid Laser, Nanjing University of Science and Technology, Nanjing 210094, China;
3 Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;
4 IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China |
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Abstract Once the metalenses are fabricated, the functions of most metalenses are invariable. The tunability and reconfigurability are useful and cost-saving for metalenses in realistic applications. We demonstrate this tunability here via a novel hybrid metalens with the strategic placement of an ultra-thin VO2 layer. The hybrid metalens is capable of dynamically modulating the focusing intensity of transmitted light at a wavelength of 1550 nm, and demonstrate a 42.28% focusing efficiency of the incident light and 70.01% modulation efficiency. The hybrid metalens' optothermal simulations show an optothermal conversion process of dynamic focusing, and a maximum laser density of 1.76×103 W/cm2 can be handled at an ambient temperature lower than 330 K. The hybrid metalens proposed in this work, a light-dose sensitive tunable smart metalens that can protect other instruments/systems or materials from being damaged, has its specific applications such as in anti-satellite blinding, bio-imaging, etc.
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Received: 26 August 2021
Revised: 15 November 2021
Accepted manuscript online:
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PACS:
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42.79.Wc
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(Optical coatings)
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42.88.+h
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(Environmental and radiation effects on optical elements, devices, and systems)
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42.70.-a
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(Optical materials)
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78.20.Bh
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(Theory, models, and numerical simulation)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No.61875087) and the Innovation and Development Foundation of China Academy of Engineering Physics (Grant No.CX20200020). |
Corresponding Authors:
Xin Ye,E-mail:yexin@caep.cn;Wan-Guo Zheng,E-mail:group ye@163.com;Ri-Hong Zhu,E-mail:zhurihong@njust.edu.cn
E-mail: yexin@caep.cn;group_ye@163.com;zhurihong@njust.edu.cn
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| About author: 2021-11-24 |
Cite this article:
Jing-Jun Wu(伍景军), Feng Tang(唐烽), Jun Ma(马骏), Bing Han(韩冰), Cong Wei(魏聪), Qing-Zhi Li(李青芝), Jun Chen(陈骏), Ning Zhang(张宁), Xin Ye(叶鑫), Wan-Guo Zheng(郑万国)‡, and Ri-Hong Zhu(朱日宏) Temperature-responded tunable metalenses based on phase transition materials 2022 Chin. Phys. B 31 054216
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