Influence of Water Temperature on Temporal Coherence of Stimulated Brillouin Scattering

Jin Xu; Yangning Guo; Ningning Luo; Shujing Li; Jiulin Shi; Xingdao He

doi:10.3788/AOS202040.0929001

Acta Optica Sinica, Volume. 40, Issue 9, 0929001(2020)

Influence of Water Temperature on Temporal Coherence of Stimulated Brillouin Scattering

Jin Xu^1,2, Yangning Guo², Ningning Luo², Shujing Li², Jiulin Shi^1,2、*, and Xingdao He^1,2、**

¹Key Laboratory of Nondestructive Test, Ministry of Education, Nanchang Hangkong University, Nanchang, Jiangxi 330063, China

²Jiangxi Engineering Laboratory for Optoelectronics Testing Technology, Nanchang Hangkong University, Nanchang, Jiangxi 330063, China

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Figures & Tables(11)

Fig. 1. Schematic of experimental measurement

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Fig. 2. SBS interference images under different optical path differences. (a) 0 m; (b) 0.2 m; (c) 0.4 m; (d) 0.6 m

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Fig. 3. Fringe visibility under different optical path differences

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Fig. 4. SBS interference images under different temperatures. (a) 30 ℃; (b) 20 ℃; (c) 10 ℃; (d) 5 ℃

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Fig. 5. Pulse waveforms after SBS interference under different temperatures. (a) 30 ℃; (b) 5 ℃

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Fig. 6. Fringe visibility versus temperature

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Fig. 7. Pulse duration of SBS versus temperature

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Fig. 8. Interference images and pulse waveforms under different optical path differences when T is 10 ℃. (a) Interference image at 0.1 m; (b) pulse waveform at 0.1 m; (c) interference image at 0.4 m; (d) pulse waveform at 0.4 m

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Fig. 9. Interference images and pulse waveforms under different optical path differences when T is 20 ℃. (a) Interference image at 0.1 m; (b) pulse waveform at 0.1 m; (c) interference image at 0.4 m; (d) pulse waveform at 0.4 m

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Table 1. Complex degree of coherence at different temperatures when Δ is 0.3 m
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Table 1. Complex degree of coherence at different temperatures when Δ is 0.3 m
T /℃ 5 10 15 20 25 30
Complex degree of coherence 0.05 0.16 0.21 0.41 0.65 0.66

Table 2. Complex degree of coherence at different optical path differences when T is 15 ℃
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Table 2. Complex degree of coherence at different optical path differences when T is 15 ℃
Δ /m 0 0.1 0.2 0.3 0.4
Complex degree of coherence 1.00 0.75 0.27 0.21 0.12

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Jin Xu, Yangning Guo, Ningning Luo, Shujing Li, Jiulin Shi, Xingdao He. Influence of Water Temperature on Temporal Coherence of Stimulated Brillouin Scattering[J]. Acta Optica Sinica, 2020, 40(9): 0929001

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