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arXiv · 1905.11792

Upmost efficiency, few-micron-sized midwave infrared HgCdTe photodetectors

Roy Avrahamy·Moshe Zohar·Mark Auslender·Zeev Fradkin·Benny Milgrom·Rafi Shikler·Shlomo Hava
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Abstract

A few-micron thick structure that shows nearly 100% resonant polarized absorptance at a predefined midinfrared wavelength is designed and simulated. Like resonant-cavity enhanced photodetector structure, it contains a thin absorber enclosed in a dielectric cavity but surrogates the mirrors by two grating-on-layer structures. Fair manufacturing tolerance while maintaining high peak efficiency is proved. Electromagnetic fields amplitudes and Poynting vector over the cavity-absorber area are visualized and topology of electromagnetic power flow for two linear polarizations is discussed.

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Roy Avrahamy, Moshe Zohar, Mark Auslender, Zeev Fradkin, Benny Milgrom, Rafi Shikler, Shlomo Hava. 2019-05-28. Upmost efficiency, few-micron-sized midwave infrared HgCdTe photodetectors. https://doi.org/10.1364/ao.58.0000f1

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