中国物理B ›› 2022, Vol. 31 ›› Issue (5): 54216-054216.doi: 10.1088/1674-1056/ac3cad

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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. 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
  • 收稿日期:2021-08-26 修回日期:2021-11-15 发布日期:2022-04-21
  • 通讯作者: 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
  • 基金资助:
    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).

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. 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
  • Received:2021-08-26 Revised:2021-11-15 Published:2022-04-21
  • Contact: 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
  • About author:2021-11-24
  • Supported by:
    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).

摘要: 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.

关键词: temperature-responded, tunable metalenses, phase change material VO2

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.

Key words: temperature-responded, tunable metalenses, phase change material VO2

中图分类号:  (Optical coatings)

  • 42.79.Wc
42.88.+h (Environmental and radiation effects on optical elements, devices, and systems) 42.70.-a (Optical materials) 78.20.Bh (Theory, models, and numerical simulation)