Optics and Precision Engineering, Volume. 30, Issue 19, 2313(2022)
Research progress of metalenses in mid-infrared band
Mid-infrared imaging devices, especially those operating in the atmospheric window (3-5 μm and 8-12 μm), have important applications in infrared imaging and detection. Traditional mid-infrared imaging devices are usually bulky, expensive and complicated, which hinder the development of lightweight and integration in the future. The metalens, which are composed of subwavelength micro-nano structures arrayed in a periodic or aperiodic manner, have the characteristics of thinness, easy of integration and multi-functionality, providing new possibilities for future miniaturization needs. In this paper, the research progress of metalens in the mid-infrared band is reviewed, then the basic phase control methods of the metalens and its mechanism for achieving high focusing efficiency, eliminating chromatic aberration and monochromatic aberration in the mid-infrared band are introduced. Moreover, this paper sort out the imaging applications of mid-infrared metalens, including polarization dependent imaging, tunable and reconfigurable imaging and other imaging applications. Finally, the challenges and future prospects of this emerging field are discussed.
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Aoling LI, Huigao DUAN, Honghui JIA, Jianhua LI, Yueqiang HU. Research progress of metalenses in mid-infrared band[J]. Optics and Precision Engineering, 2022, 30(19): 2313
Category: Modern Applied Optics
Received: May. 27, 2022
Accepted: --
Published Online: Oct. 27, 2022
The Author Email: HU Yueqiang (huyq@hnu.edu.cn)