光学
红外线的
栅栏
材料科学
共振(粒子物理)
导模共振
光电子学
波长
衍射光栅
物理
粒子物理学
作者
Jiachen Yu,Tieyan Zhang,Qiqige Wulan,Xing Li,Zhe Li,Zhijun Liu
出处
期刊:Applied Optics
[The Optical Society]
日期:2022-07-05
卷期号:61 (20): 5869-5869
被引量:1
摘要
Narrowband resonance plays an important role in many optical applications, especially for the development of wavelength-selective properties and enhanced light–matter interaction. In this paper, we demonstrate metal–insulator–metal (MIM) waveguide gratings, which exhibit guided-mode resonance (GMR) with reduced bandwidth in mid-infrared absorption and thermal emission. Our fabricated MIM waveguide grating consists of a copper substrate, a lossless ZnSe film, and a top gold stripe grating. Our measurements reveal strong GMRs with a bandwidth of 1.29% of the central wavelength in both mid-infrared absorption and thermal emission spectra. By varying structural parameters of the MIM waveguide grating, strong absorptions and thermal emissions of GMRs are observed and tuned within the 3–5 µm wavelength range. These results manifest the great potential of engineering infrared properties by using GMR and could be useful for spectral control in a variety of infrared devices.
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