Control of resonance mode using a fine-structured grating: toward a high resolving power filter

He Xin; Jie Jinliang; Yang Junbo; Han Yunxin; Zhang Sen

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Control of resonance mode using a fine-structured grating: toward a high resolving power filter

机译：使用细结构光栅控制谐振模式：朝向高分辨率电力滤波器

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A band-stop filter with high resolving power is designed for mid-infrared spectroscopic sensing and imaging applications. By utilizing a truncated grating consisting of multiple gold nanowires in each unit cell of the periodic structure, compression of the stop bandwidth and improvement of the resonance extinction are realized simultaneously. It shows only a single stop band at similar to 4.474 pm with 15 dB extinction and 80% background transmission over a wide spectral range. The obtained narrow linewidth (similar to 1.45 nm) enables a spectral resolving power higher than 3000. Flexible control of the filtering performance is investigated by adjusting the variety of geometrical parameters. Moreover, the structure may have potential applications in refractive index sensing. (C) 2019 Optical Society of America

机译：具有高分辨率功率的带式停止过滤器专为中红外光谱传感和成像应用而设计。通过利用由周期性结构的每个单元电池中的多个金纳米线组成的截短光栅，同时实现止动带宽的压缩和谐振消光的改善。它仅显示一个类似于4.474 PM的单个停滞带，并且在宽的光谱范围内跳过15 dB灭绝和GT; 80％的背景传输。获得的窄线宽（类似于1.45nm），使得能够高于3000的光谱分辨率。通过调整各种几何参数来研究对滤波性能的灵活控制。此外，该结构可以具有在折射率感测中的潜在应用。（c）2019年光学学会

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来源
《Applied optics》 |2019年第3期|共5页
作者
He Xin; Jie Jinliang; Yang Junbo; Han Yunxin; Zhang Sen;
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Natl Univ Def Technol Dept Phys Changsha 410073 Hunan Peoples R China;

Natl Univ Def Technol Coll Aerosp Sci &

Engn Changsha 410073 Hunan Peoples R China;

Natl Univ Def Technol Dept Phys Changsha 410073 Hunan Peoples R China;

Natl Univ Def Technol Dept Phys Changsha 410073 Hunan Peoples R China;

Natl Univ Def Technol Dept Phys Changsha 410073 Hunan Peoples R China;

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正文语种 eng
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Control of resonance mode using a fine-structured grating: toward a high resolving power filter

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