Dual-band perfect absorber for a mid-infrared photodetector based on a dielectric metal metasurface

Zhao Chen; Yudong Weng; Junku Liu; Nan Guo; Yaolun Yu; Lin Xiao

doi:doi:10.1364/PRJ.410554

Photonics Research, 2021, 9 (1): 01000027, Published Online: Apr. 1, 2021

Dual-band perfect absorber for a mid-infrared photodetector based on a dielectric metal metasurface Download： 768次

Zhao Chen ^1,*†Yudong Weng ^1†Junku Liu ¹Nan Guo ¹Yaolun Yu ¹Lin Xiao ^1,2

Author Affiliations

¹ Nanophotonics and Optoelectronics Research Center, Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China

² e-mail: xiaolin@qxslab.cn

Figures & Tables

Fig. 1. (a) Schematic of the resonant absorption structure based on dielectric–metal metasurface. (b) Theoretical absorption spectrum (blue line) and normalized average temperature increasing of the sensitive material upper surface, ΔT (red line). Normalized |E|-field distributions for the two absorption peaks at (c) λ=6.142 μm and (d) λ=7.795 μm. Inset shows the unit cell of the structure and parameter symbols.

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Fig. 2. Optical properties of the metastructure absorber. The graphs show the spectra of absorption with different (a) period P, (b) width w, (c) height h, and (d) E-polarization.

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Fig. 3. Temporal temperature distributions for (a) different substrate materials with the same incident flux I0=103 W/cm2 and (b) continuous wave and pulsed wave illumination when the system is suspended with incident flux I0=1.0 W/cm2.

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Fig. 4. Temporal temperature distributions for different (a) pulse time t illumination and (b) heat transfer coefficients hhtc at t=1.0 ms when the system is suspended with incident flux I0=1.0 W/cm2.

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Fig. 5. Temporal temperature distributions for 100× unit cells with incident flux I0=1.0 W/cm2 under CW and PW illumination. Inset shows the maps of temperature distributions at t=0.4 ms.

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Fig. 6. Schematic of a single metasurface element used for both the electromagnetic and heat transfer simulations and their associated boundary conditions.

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Fig. 7. (a), (b) |H|- and (c), (d) Qabs-field distributions for λ=6.142 μm and λ=7.795 μm, respectively.

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Fig. 8. (a) Absorption spectrum. (b) Temporal temperature distributions under continuous wave and pulsed wave illumination with incident flux I0=1 W/cm2. Here, pulse (t)=1 for 0<t≤0.1 ms, and pulse(t)=0 otherwise. P=5700 nm, w=4000 nm.

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Fig. 9. (a) Absorption spectra for different incident angle α. (b)–(d) Field distributions for |E|, |H|, and, Qabs at the additional absorption wavelength λ=6.865 μm [denoted by blue arrow in (a)], respectively.

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Fig. 10. Temporal temperature distributions under continuous wave and pulsed wave illumination for different substrate materials (a) Si with I0=103 W/cm2 and (b) SiO2 with I0=15 W/cm2.

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Fig. 11. Simulated temporal temperature distributions after excitation with a fs-pulse.

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Table1. Thermal Parameters of the Materials Used in Our Metastructures

Materials	$k [W / (m \cdot K)]$	${ρ [g / cm}^{3}]$	$c [J / (g \cdot K)]$
Si	131	2.239	0.7
Au	319	19.3	0.129
AlN	290	3.26	0.75
${SiO}_{2}$	1.38	2.196	0.703

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Zhao Chen, Yudong Weng, Junku Liu, Nan Guo, Yaolun Yu, Lin Xiao. Dual-band perfect absorber for a mid-infrared photodetector based on a dielectric metal metasurface[J]. Photonics Research, 2021, 9(1): 01000027.

Dual-band perfect absorber for a mid-infrared photodetector based on a dielectric metal metasurface Download： 768次

Fig. 2. Optical properties of the metastructure absorber. The graphs show the spectra of absorption with different (a) period P, (b) width w, (c) height h, and (d) E-polarization.

Fig. 3. Temporal temperature distributions for (a) different substrate materials with the same incident flux I0=103 W/cm2 and (b) continuous wave and pulsed wave illumination when the system is suspended with incident flux I0=1.0 W/cm2.

Fig. 4. Temporal temperature distributions for different (a) pulse time t illumination and (b) heat transfer coefficients hhtc at t=1.0 ms when the system is suspended with incident flux I0=1.0 W/cm2.

Fig. 5. Temporal temperature distributions for 100× unit cells with incident flux I0=1.0 W/cm2 under CW and PW illumination. Inset shows the maps of temperature distributions at t=0.4 ms.

Fig. 6. Schematic of a single metasurface element used for both the electromagnetic and heat transfer simulations and their associated boundary conditions.

Fig. 7. (a), (b) |H|- and (c), (d) Qabs-field distributions for λ=6.142 μm and λ=7.795 μm, respectively.

Fig. 8. (a) Absorption spectrum. (b) Temporal temperature distributions under continuous wave and pulsed wave illumination with incident flux I0=1 W/cm2. Here, pulse (t)=1 for 0<t≤0.1 ms, and pulse(t)=0 otherwise. P=5700 nm, w=4000 nm.

Fig. 9. (a) Absorption spectra for different incident angle α. (b)–(d) Field distributions for |E|, |H|, and, Qabs at the additional absorption wavelength λ=6.865 μm [denoted by blue arrow in (a)], respectively.

Fig. 10. Temporal temperature distributions under continuous wave and pulsed wave illumination for different substrate materials (a) Si with I0=103 W/cm2 and (b) SiO2 with I0=15 W/cm2.

Fig. 11. Simulated temporal temperature distributions after excitation with a fs-pulse.

Table1. Thermal Parameters of the Materials Used in Our Metastructures

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Dual-band perfect absorber for a mid-infrared photodetector based on a dielectric metal metasurface Download： 768次

Fig. 2. Optical properties of the metastructure absorber. The graphs show the spectra of absorption with different (a) period P, (b) width w, (c) height h, and (d) E-polarization.

Fig. 3. Temporal temperature distributions for (a) different substrate materials with the same incident flux I0=103 W/cm2 and (b) continuous wave and pulsed wave illumination when the system is suspended with incident flux I0=1.0 W/cm2.

Fig. 4. Temporal temperature distributions for different (a) pulse time t illumination and (b) heat transfer coefficients hhtc at t=1.0 ms when the system is suspended with incident flux I0=1.0 W/cm2.

Fig. 5. Temporal temperature distributions for 100× unit cells with incident flux I0=1.0 W/cm2 under CW and PW illumination. Inset shows the maps of temperature distributions at t=0.4 ms.

Fig. 6. Schematic of a single metasurface element used for both the electromagnetic and heat transfer simulations and their associated boundary conditions.

Fig. 7. (a), (b) |H|- and (c), (d) Qabs-field distributions for λ=6.142 μm and λ=7.795 μm, respectively.

Fig. 8. (a) Absorption spectrum. (b) Temporal temperature distributions under continuous wave and pulsed wave illumination with incident flux I0=1 W/cm2. Here, pulse (t)=1 for 0<t≤0.1 ms, and pulse(t)=0 otherwise. P=5700 nm, w=4000 nm.

Fig. 9. (a) Absorption spectra for different incident angle α. (b)–(d) Field distributions for |E|, |H|, and, Qabs at the additional absorption wavelength λ=6.865 μm [denoted by blue arrow in (a)], respectively.

Fig. 10. Temporal temperature distributions under continuous wave and pulsed wave illumination for different substrate materials (a) Si with I0=103 W/cm2 and (b) SiO2 with I0=15 W/cm2.

Fig. 11. Simulated temporal temperature distributions after excitation with a fs-pulse.

Table1. Thermal Parameters of the Materials Used in Our Metastructures

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