Solar‑Blind Ultraviolet Band‑Pass Filter Based on Coupling of Photonic Crystal Defects

Haoqiang Hou; Yibiao Yang; Min Wu; Hongming Fei; Xiaodan Zhao

doi:10.3788/AOS221815

Journals >Acta Optica Sinica >Volume 43 >Issue 9 >Page 0923003 > Article

Acta Optica Sinica
Vol. 43, Issue 9, 0923003 (2023)

Solar‑Blind Ultraviolet Band‑Pass Filter Based on Coupling of Photonic Crystal Defects

Haoqiang Hou^1、2, Yibiao Yang^1、2、*, Min Wu^1、2, Hongming Fei^1、2, and Xiaodan Zhao^1、2

Author Affiliations

¹College of Physics and Optoelectronic Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

²Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

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DOI: 10.3788/AOS221815 Cite this Article Set citation alerts

Haoqiang Hou, Yibiao Yang, Min Wu, Hongming Fei, Xiaodan Zhao. Solar‑Blind Ultraviolet Band‑Pass Filter Based on Coupling of Photonic Crystal Defects[J]. Acta Optica Sinica, 2023, 43(9): 0923003 Copy Citation Text

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Schematic of photonic crystal structure H/LN1AH/LN1N2

Fig. 1. Schematic of photonic crystal structure

{[{(H / L)}^{N_{1}} A {(H / L)}^{N_{1}}]}^{N_{2}}

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$Distribution of refractive index n and extinction coefficient κ for Si3N4 and SiO2. (a) nSi3N4; (b) nSiO2; (c) κSi3N4; (d) κSiO2$

Fig. 2. Distribution of refractive index n and extinction coefficient κ for Si₃N₄ and SiO₂. (a)

n_{S i_{3} N_{4}}

; (b)

n_{S i O_{2}}

; (c)

κ_{S i_{3} N_{4}}

; (d)

κ_{S i O_{2}}

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Fig. 3. Transmission spectra of photonic crystal

{[{(S i_{3} N_{4} / S i O_{2})}^{N_{1}} A i r {(S i_{3} N_{4} / S i O_{2})}^{N_{1}}]}^{N_{2}}

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Fig. 4. Transmission spectra of photonic crystal

{[{(S i_{3} N_{4} / S i O_{2})}^{1} A i r {(S i_{3} N_{4} / S i O_{2})}^{1}]}^{N_{2}}

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Fig. 5. Transmission spectra of photonic crystal with different medium thicknesses. (a)

d_{S i_{3} N_{4}}

; (b)

d_{S i O_{2}}

; (c) d_Air

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Fig. 6. Transmission spectra of photonic crystal when

d_{S i_{3} N_{4}}

=30 nm,

d_{S i O_{2}}

=40 nm, and d_Air=67 nm

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Fig. 7. Transmission spectra of photonic crystal at incident angles of 0°, 15°, 30°, and 45°. (a) 0°; (b) 15°; (c) 30°; (d) 45°

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Fig. 8. Photonic crystal transmission spectra when the incident angle varies from 0° to 45° for TE and TM modes. (a) TE mode;(b) TM mode

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N₁	Left edge position /nm	Right edge position /nm	Bandwidth /nm	Transmittance / %
1	240.3	282.5	42.2	89.99
2	251.5	265.6	14.1	88.00
3	254.9	260.8	5.9	82.00
4	256.5	259.0	2.5	70.43
5	257.2	258.3	1.1	49.68

Table 1. Transmission spectrum data of photonic crystal

{[{(S i_{3} N_{4} / S i O_{2})}^{N_{1}} A i r {(S i_{3} N_{4} / S i O_{2})}^{N_{1}}]}^{N_{2}}

N₂	Left edge position /nm	Right edge position /nm	Bandwidth /nm	Transmittance / %
1	227.7	322.7	95.0	78.07
2	238.8	286.5	47.7	85.04
3	240.2	282.4	42.2	90.04
4	240.1	282.2	42.1	91.01
5	239.8	282.8	43.0	90.07

Table 2. Transmission spectrum data of photonic crystal

{[{(S i_{3} N_{4} / S i O_{2})}^{1} A i r {(S i_{3} N_{4} / S i O_{2})}^{1}]}^{N_{2}}

Incident angle /（°）	TE mode				TM mode
Incident angle /（°）	Left edge position /nm	Right edge position /nm	Bandwidth /nm	Transmittance / %	Left edge position /nm	Right edge position /nm	Bandwidth / nm	Transmittance / %
0	238.8	280.3	41.5	90.71	238.8	280.3	41.5	90.71
15	236.5	276.0	39.5	89.59	236.2	276.5	40.3	89.71
30	229.3	261.9	32.6	84.22	228.4	264.4	36.0	84.86
45	220.4	242.9	22.5	69.38	218.7	247.6	28.9	73.65

Table 3. Transmission spectrum data of photonic crystal at incident angles of 0°, 15°, 30°, and 45° for TE and TM modes

Haoqiang Hou, Yibiao Yang, Min Wu, Hongming Fei, Xiaodan Zhao. Solar‑Blind Ultraviolet Band‑Pass Filter Based on Coupling of Photonic Crystal Defects[J]. Acta Optica Sinica, 2023, 43(9): 0923003

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