Modulation and Sensing Properties of Graphene Plasma Based on Surface Electric Current Boundary Condition

Sa Yang; Renlong Zhou; Dan Liu; Yongming Zhao; Qiawu Lin; Shuang Li

doi:10.3788/AOS201939.1124001

Journals >Acta Optica Sinica >Volume 39 >Issue 11 >Page 1124001 > Article

Acta Optica Sinica
Vol. 39, Issue 11, 1124001 (2019)

Modulation and Sensing Properties of Graphene Plasma Based on Surface Electric Current Boundary Condition

Sa Yang, Renlong Zhou^*, Dan Liu, Yongming Zhao, Qiawu Lin, and Shuang Li

Author Affiliations

School of Physics and Information Engineering, Guangdong University of Education, Guangzhou, Guangdong 510303, China

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DOI: 10.3788/AOS201939.1124001 Cite this Article Set citation alerts

Sa Yang, Renlong Zhou, Dan Liu, Yongming Zhao, Qiawu Lin, Shuang Li. Modulation and Sensing Properties of Graphene Plasma Based on Surface Electric Current Boundary Condition[J]. Acta Optica Sinica, 2019, 39(11): 1124001 Copy Citation Text

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Model structure and FDTD discrete Yee cell. (a) Lattice structure of graphene ribbon; (b) 3D FDTD discrete Yee cell with graphene ribbon at z=k+1/2 where a zero-thickness graphene ribbon is placed

Fig. 1. Model structure and FDTD discrete Yee cell. (a) Lattice structure of graphene ribbon; (b) 3D FDTD discrete Yee cell with graphene ribbon at z=k+1/2 where a zero-thickness graphene ribbon is placed

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Spectrogram and field patterns of unit cell. (a) Absorption spectrum of graphene ribbon unit cell; (b) distributions of electric field Ez at wavelength of 12.71 μm; (c) distributions of electric field Ez at wavelength of 13.92 μm

Fig. 2. Spectrogram and field patterns of unit cell. (a) Absorption spectrum of graphene ribbon unit cell; (b) distributions of electric field E_z at wavelength of 12.71 μm; (c) distributions of electric field E_z at wavelength of 13.92 μm

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Fig. 3. Effect of E_f on GSP absorption spectrum.(a)Absorption spectra of graphene ribbon when E_f is 0.4, 0.6, and 0.8 eV; (b) variation of absorption spectrum when E_f varies from 0.4 eV to 0.8 eV, continuously

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Fig. 4. Variations in λ_m,E_e_m, γ_i_m, and γ_w_m under different E_f. (a) λ_m; (b) E_e_m; (c) γ_i_m; (d) γ_w_m<

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Fig. 5. Effect of μ on GSP absorption spectrum. (a) Absorption spectra of graphene ribbon when μ is 0.4, 0.6, and 0.8 m²·(V·s)^-1; (b) evolution of optical absorption of graphene ribbon when μ varies from 0.1 m²·(V·s)^-1 to 1 m²·(V·s)^-1 continuously

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Fig. 6. Variations in λ_m, E_e_m, γ_i_m, and γ_w_m with μ. (a) λ_m; (b) E_e_m; (c) γ_i_m; (d) γ_w_m

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Fig. 7. Effect of n₁on GSP absorption spectrum. (a) Absorption spectra of graphene ribbon when n₁ is 1.3, 1.6, and 1.9; (b) evolution of optical absorption of graphene ribbon when n₁varies from 1 to 2

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Fig. 8. Variations in λ_m, E_e_m, γ_i_m, and γ_w_m with n₁. (a) λ_m; (b) E_e_m; (c) γ_i_m; (d) γ_w_m

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Fig. 9. Modulation characteristics of quality factor and lifetime. (a) Variation in F_FOMwith n₁; (b) variation in τ_m with E_f; (c) variation in τ_m with μ; (d) variation in τ_m with n₁

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Method	Parameter	E_f=0.4 eV	E_f=0.45 eV	E_f=0.5 eV	E_f=0.55 eV	E_f=0.6 eV	E_f=0.65 eV	E_f=0.7 eV	E_f=0.75 eV	E_f=0.8 eV
FDTD	${λ_{1}}_{}$ /μm	15.53	14.67	13.98	13.21	12.71	11.97	11.88	11.53	11.13
	${λ_{2}}_{}$ /μm	16.81	15.87	15.21	14.47	13.92	13.41	12.93	12.59	12.23
	${E_{e 1}}_{}$ /10²	15.01	16.34	18.33	21.29	23.57	26.20	28.81	31.40	33.96
	${E_{e 2}}_{}$ /10²	24.13	29.41	34.36	40.04	44.56	49.60	54.55	59.41	64.17
CMT	${γ_{i 1}}_{}$ /(10¹² rad·s^-1)	8.42	7.28	6.64	6.07	5.69	5.31	5.03	4.71	4.45
	${γ_{i 2}}_{}$ /(10¹² rad·s^-1)	7.93	7.09	6.45	5.94	5.54	5.21	4.87	4.55	4.30
	${γ_{w 1}}_{}$ /(10¹⁰ rad·s^-1)	0.88	1.03	1.42	1.82	2.18	2.58	3.01	3.59	4.03
	${γ_{w 2}}_{}$ /(10¹⁰ rad·s^-1)	1.17	1.72	2.20	2.89	3.43	4.21	4.95	5.62	6.42

Table 1. λ_m, E_e_m, γ_i_m, and γ_w_{Method Parameter μ=0.1 m²·(V·s)^-1 μ=0.2 m²·(V·s)^-1 μ=0.3 m²·(V·s)^-1 μ=0.4 m²·(V·s)^-1 μ=0.5 m²·(V·s)^-1 μ=0.6 m²·(V·s)^-1 μ=0.7 m²·(V·s)^-1 μ=0.8 m²·(V·s)^-1 μ=0.9 m²·(V·s)^-1 μ=1.0 m²·(V·s)^-1
FDTD ${λ_{1}}_{}$ /μm 12.31 12.31 12.31 12.31 12.31 12.31 12.31 12.31 12.31 12.31
${λ_{2}}_{}$ /μm 13.46 13.46 13.46 13.46 13.46 13.46 13.46 13.46 13.46 13.46
${E_{e 1}}_{}$ /10² 3.45 5.16 8.76 11.57 13.84 16.14 18.43 20.91 23.32 25.67
${E_{e 2}}_{}$ /10² 3.45 7.65 12.47 18.33 24.10 29.42 34.48 39.34 44.04 48.59
CMT ${γ_{i 1}}_{}$ /(10¹³ rad·s^-1) 5.47 3.13 1.89 1.29 1.05 0.93 0.81 0.68 0.59 0.57
${γ_{i 2}}_{}$ /(10¹² rad·s ^-1) 4.17 2.32 1.44 1.06 0.93 0.82 0.72 0.61 0.52 0.46
${γ_{w 1}}_{}$ /(10¹⁰ rad·s^-1) 0.33 0.68 0.96 1.23 1.48 1.72 1.95 2.16 2.35 2.52
${γ_{w 2}}_{}$ /(10¹⁰ rad·s^-1) 0.75 1.14 1.53 1.89 2.28 2.71 3.15 3.50 3.83 4.12
Table 2. λ_m, E_e_m, γ_i_m, and γ_w_{Method Parameter n₁=1.0 n₁=1.1 n₁=1.2 n₁=1.3 n₁=1.4 n₁=1.5 n₁=1.6 n₁=1.7 n₁=1.8 n₁=1.9 n₁=2.0
FDTD ${λ_{1}}_{}$ /μm 12.31 12.90 13.51 14.15 14.78 15.43 16.09 16.79 17.47 18.19 18.90
${λ_{2}}_{}$ /μm 13.51 14.51 14.82 15.52 16.21 16.93 17.67 18.43 19.17 19.94 20.72
${E_{e 1}}_{}$ /10² 26.97 25.85 24.77 23.68 22.69 21.73 20.81 19.91 19.08 18.26 17.51
${E_{e 2}}_{}$ /10² 51.47 48.66 45.99 43.43 41.13 38.92 36.85 34.92 33.17 31.51 29.98
CMT ${γ_{i 1}}_{}$ /(10¹² rad·s^-1) 5.09 5.10 5.11 5.12 5.13 5.14 5.15 5.16 5.17 5.18 5.19
${γ_{i 2}}_{}$ /(10¹² rad·s^-1) 5.29 5.30 5.31 5.32 5.33 5.34 5.35 5.36 5.37 5.38 5.39
${γ_{w 1}}_{}$ /(10¹⁰ rad·s^-1) 2.87 2.99 3.10 3.22 3.34 3.46 3.59 3.71 3.83 3.96 4.08
${γ_{w 1}}_{}$ /(10¹⁰ rad·s^-1) 5.42 5.31 5.20 5.09 4.98 4.88 4.78 4.68 4.58 4.48 4.38
Table 3. λ_m, E_e_m, γ_i_m, and γ_w_m}}

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