A high-Q mid-infrared Tamm plasmon absorber using MgF2 and Ge aperiodic tandem films designed by the genetic algorithm

Chunhui Ou; Jian Wang; Changzheng Sun; Zhibiao Hao; Yanjun Han; Bing Xiong; Lai Wang; Hongtao Li; Jiadong Yu; Yi Luo

doi:10.1063/5.0086863

AIP Advances (Mar 2022)

A high-Q mid-infrared Tamm plasmon absorber using MgF2 and Ge aperiodic tandem films designed by the genetic algorithm

Chunhui Ou,
Jian Wang,
Changzheng Sun,
Zhibiao Hao,
Yanjun Han,
Bing Xiong,
Lai Wang,
Hongtao Li,
Jiadong Yu,
Yi Luo

Affiliations

Chunhui Ou: Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Jian Wang: Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Changzheng Sun: Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Zhibiao Hao: Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Yanjun Han: Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Bing Xiong: Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Lai Wang: Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Hongtao Li: Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Jiadong Yu: Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
Yi Luo: Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China

DOI: https://doi.org/10.1063/5.0086863
Journal volume & issue: Vol. 12, no. 3
pp. 035052 – 035052-5

Abstract

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A high-Q mid-infrared Tamm plasmon (TP) absorber using MgF2 and Ge aperiodic tandem films is designed by the genetic algorithm and fabricated by electron beam evaporation and magnetron sputtering. Such a design circumvents the need for the distributed Bragg reflector grating, and the thickness of individual MgF2 films is much smaller than a quarter of wavelength in films (λ/4n). The fabricated TP absorber exhibits a high and sharp absorption peak at 2.73 μm with a quality factor (Q) of 144, while the simulated counterpart has the absorption peak at 2.72 μm with a Q of 155. The profiles of an electromagnetic field in the tandem films are also simulated to reveal the mechanism of narrow thermal emission. Such a high-Q TP absorber is very promising in the mid-infrared simulator and detection.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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