期刊
JOURNAL OF OPTICS
卷 23, 期 7, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2040-8986/ac01b2
关键词
metalens; multiwavelength; visible; spatial interleaving
类别
资金
- Samsung Electronics Co., Ltd [IO201211-08042-01]
- Brain Korea 21 PLUS project for Center for Creative Industrial Materials [F18SN25D1706]
The study demonstrates a multiwavelength metalens that operates concurrently at three visible wavelengths, designed by integrating metalens components using SIM or SLAM methods. The metalenses achieved near diffraction-limited focusing efficiency at wavelengths of 400, 600, and 800 nm, providing a simple guideline to increase the operating wavelengths of metalenses.
We theoretically demonstrate a multiwavelength metalens that operates concurrently at three visible wavelengths (lambda = 400, 600, and 800 nm). Multiwavelength metalenses are designed by a simple integration of metalens components by a spatial interleaving method (SIM) or by a symmetric linear array method (SLAM). The designed metalenses focus light to the same focal distance at three visible wavelengths with near diffraction-limited full width at half-maximum. At wavelengths of 400, 600, and 800 nm, the SIM metalens had focusing efficiencies of 32.6%, 43.6%, and 51.7%, respectively, and the SLAM metalens had focusing efficiencies of 35.6%, 43.8%, and 56.4%, respectively. These methods can provide a simple guideline to increase the operating wavelengths of metalenses.
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