Ultra-thin Perfect Optical Absorption Metamaterial for Mid Infrared Photodetection

Roy Avrahamy,Moshe Zohar,Benjamin Milgrom,Mark Auslender

Conference on Lasers and Electro-Optics（2022）

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摘要

We inversely design a sub-vacuum-wavelength thick metamaterial comprising meta-surface, microcavity, and ultra-thin photo-absorber, with an absorptance spectrum ∼ 99% peaked at 3.5µm, maintaining this level over a flattop range around this wavelength.

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关键词

absorption,ultra-thin

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