光学
波前
材料科学
反射(计算机编程)
红外线的
波长
传输(电信)
衍射
光电子学
衍射效率
光学涂层
制作
涂层
物理
计算机科学
电信
纳米技术
病理
程序设计语言
替代医学
医学
作者
Halil Can Nalbant,Fatih Balli,Tolga Yelboğa,Arda Eren,Ahmet Sözak
出处
期刊:Applied Optics
[The Optical Society]
日期:2022-10-31
卷期号:61 (33): 9946-9946
被引量:7
摘要
Thermal imaging at the infrared wavelength regime has long been applied to different areas such as agriculture and defense industries. Metasurfaces, 2D engineered ultra-thin structures, have attracted much attention due to their compact size, superior performance, and different functionalities at optical frequencies. This work details the design and fabrication of high transmission metalenses operating at the long-wave infrared (LWIR) spectrum. We minimize the reflection losses through anti-reflection coating (ARC) while maintaining the full wavefront control at the central wavelength 9.07 µm. Our unit cell structure provides an average transmission of 97.5%. We experimentally verify our results and show that the fabricated metalenses perform diffraction-limited imaging at the design wavelength.
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