中国物理B ›› 2021, Vol. 30 ›› Issue (8): 84202-084202.doi: 10.1088/1674-1056/abe22b

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Omnidirectional and compact Tamm phonon-polaritons enhanced mid-infrared absorber

Xiaomin Hua(花小敏)1, Gaige Zheng(郑改革)1,2,†, Fenglin Xian(咸冯林)1,‡, Dongdong Xu(徐董董)1, and Shengyao Wang(王升耀)1   

  1. 1 Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China;
    2 Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology(CICAEET), Nanjing University of Information Science and Technology, Nanjing 210044, China
  • 收稿日期:2020-12-27 修回日期:2021-01-28 接受日期:2021-02-02 出版日期:2021-07-16 发布日期:2021-07-16
  • 通讯作者: Gaige Zheng, Fenglin Xian E-mail:jsnanophotonics@yahoo.com;xfl@nuist.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of Jiangsu Province, China (Grant Nos. BK20191396, BK20180784).

Omnidirectional and compact Tamm phonon-polaritons enhanced mid-infrared absorber

Xiaomin Hua(花小敏)1, Gaige Zheng(郑改革)1,2,†, Fenglin Xian(咸冯林)1,‡, Dongdong Xu(徐董董)1, and Shengyao Wang(王升耀)1   

  1. 1 Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China;
    2 Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology(CICAEET), Nanjing University of Information Science and Technology, Nanjing 210044, China
  • Received:2020-12-27 Revised:2021-01-28 Accepted:2021-02-02 Online:2021-07-16 Published:2021-07-16
  • Contact: Gaige Zheng, Fenglin Xian E-mail:jsnanophotonics@yahoo.com;xfl@nuist.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of Jiangsu Province, China (Grant Nos. BK20191396, BK20180784).

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摘要： Narrow band mid-infrared (MIR) absorption is highly desired in thermal emitter and sensing applications. We theoretically demonstrate that the perfect absorption at infrared frequencies can be achieved and controlled around the surface phonon resonance frequency of silicon carbide (SiC). The photonic heterostructure is composed of a distributed Bragg reflector (DBR)/germanium (Ge) cavity/SiC on top of a Ge substrate. Full-wave simulation results illustrate that the Tamm phonon-polaritons electric field can locally concentrate between the Ge cavity and the SiC film, contributed to the improved light-phonon interactions with an enhancement of light absorption. The structure has planar geometry and does not require nano-patterning to achieve perfect absorption of both polarizations of the incident light in a wide range of incident angles. Their absorption lines are tunable via engineering of the photon band-structure of the dielectric photonic nanostructures to achieve reversal of the geometrical phase across the interface with the plasmonic absorber.

关键词: perfect absorption, surface phonon polaritons, mid-infrared, distributed Bragg reflector

Abstract: Narrow band mid-infrared (MIR) absorption is highly desired in thermal emitter and sensing applications. We theoretically demonstrate that the perfect absorption at infrared frequencies can be achieved and controlled around the surface phonon resonance frequency of silicon carbide (SiC). The photonic heterostructure is composed of a distributed Bragg reflector (DBR)/germanium (Ge) cavity/SiC on top of a Ge substrate. Full-wave simulation results illustrate that the Tamm phonon-polaritons electric field can locally concentrate between the Ge cavity and the SiC film, contributed to the improved light-phonon interactions with an enhancement of light absorption. The structure has planar geometry and does not require nano-patterning to achieve perfect absorption of both polarizations of the incident light in a wide range of incident angles. Their absorption lines are tunable via engineering of the photon band-structure of the dielectric photonic nanostructures to achieve reversal of the geometrical phase across the interface with the plasmonic absorber.

Key words: perfect absorption, surface phonon polaritons, mid-infrared, distributed Bragg reflector

中图分类号:  (Resonators, cavities, amplifiers, arrays, and rings)

  • 42.60.Da
42.70.Qs (Photonic bandgap materials)