Passive and active sensing — Plasmonic grating geometries and wavelength-dependent focus depth in IR detectors

Patrick R. Kennedy, T. Laurvick
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Abstract

The objective for this research is to determine a relationship between plasmonic grating geometries and the wavelength-dependent focus depth. This research is focused on enhancing the signal collected by infrared detectors by using a metal grating as a planar lens to focus light in the detecting region of the substrate. This can be used to maintain a thinner absorbing region and possibly to create multi-color imaging in a single pixel.
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被动和主动传感-红外探测器中等离子体光栅的几何形状和波长相关的聚焦深度
本研究的目的是确定等离子体光栅几何形状与波长相关聚焦深度之间的关系。本研究的重点是利用金属光栅作为平面透镜,将光聚焦在基板的探测区域,从而增强红外探测器采集到的信号。这可用于保持较薄的吸收区域,并可能在单个像素中创建多色成像。
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