Researching | Three-dimensional numerical characteristics of optical-to-acoustic transboundary communication in vaporization mechanism

Journals >Infrared and Laser Engineering >Volume 52 >Issue 11 >Page 20230100 > Article

Infrared and Laser Engineering
Vol. 52, Issue 11, 20230100 (2023)

Three-dimensional numerical characteristics of optical-to-acoustic transboundary communication in vaporization mechanism

Ke Li¹, Jiaping Liang¹, Yao Yao^1,*, Yang Zhang²..., Siguang Zong³ and Tao Liu³|Show fewer author(s)

Author Affiliations

¹Engineering College, Shantou University, Shantou 515063, China

²Naval Research Institute, Beijing 100161, China

³Electronic Engineering College, Naval University of Engineering, Wuhan 430033, China

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DOI: 10.3788/IRLA20230100 Cite this Article

Ke Li, Jiaping Liang, Yao Yao, Yang Zhang, Siguang Zong, Tao Liu. Three-dimensional numerical characteristics of optical-to-acoustic transboundary communication in vaporization mechanism[J]. Infrared and Laser Engineering, 2023, 52(11): 20230100 Copy Citation Text

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Schematic diagram of laser scattering from sea surface

Fig. 1. Schematic diagram of laser scattering from sea surface

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Diagram of discretization of Sxy

Fig. 2. Diagram of discretization of S_xy

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Fig. 3. Rough surface model in different sea state. (a) Three-level sea state; (b) Four-level sea state

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$The BSC of laser from different rough surface at incident angle \begin{document}$ {\theta _{i1}} = {20^ \circ } $\end{document}. (a) Surface A; (b) Surface B$

Fig. 4. The BSC of laser from different rough surface at incident angle

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. (a) Surface A; (b) Surface B

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$The BSC of laser from different rough surface at incident angle \begin{document}$ {\theta _{i1}} = {60^ \circ } $\end{document}. (a) Surface A; (b) Surface B$

Fig. 5. The BSC of laser from different rough surface at incident angle

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. (a) Surface A; (b) Surface B

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$The BSC at different incident angles. (a) \begin{document}$ {\theta _{i1}} = {20^ \circ } $\end{document}; (b) \begin{document}$ {\theta _{i1}} = {60^ \circ } $\end{document}$

Fig. 6. The BSC at different incident angles. (a)

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; (b)

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Fig. 7. The transmittance at different incident angles

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Fig. 8. Schematic diagram of the simulated test system

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Fig. 9. Indoor simulation test system

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Fig. 10. Optical system

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Fig. 11. Test tank

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Fig. 12. CO₂ laser

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Fig. 13. Schematic diagram of the vaporized laser acoustic threshold test system. (a) Before laser incident; (b) After laser incident

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Fig. 14. Acoustic pulse signal

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Fig. 15. Acoustic pulse spectrogram

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Fig. 16. Area of light spot perpendicular to incident water surface. (a) Light spot before the divergence angle compression; (b) Light spot after the divergence angle compression

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Inincident angle/(°)	0	10	20	30	40	50	60	70	80
Spot area/cm²	14.93	14.94	14.96	14.99	15.06	15.16	15.34	15.73	16.95
Transmissivity	98.5%	98.5%	98.4%	98.2%	97.8%	97.2%	94.5%	86.6%	65.8%
Spot power density/kW·cm²	6.60	6.59	6.58	6.55	6.50	6.41	6.16	5.50	3.88
Acoustical power/W	731.2	731.2	714.6	698.3	682.4	666.86	636.8	529.7	133.1
Acoustic energy degree/dB	202.4	202.4	202.3	202.2	202.1	202	201.8	201	195
Photoacoustic conversion efficiency	7.4×10⁻³	7.4×10⁻³	7.3×10⁻³	7.1×10⁻³	7.0×10⁻³	6.9×10⁻³	6.7×10⁻³	6.1×10⁻³	2.0×10⁻³
Effective acoustic power/W	146.2	146.2	142.9	139.6	136.5	133.4	127.4	105.9	26.6
Effective acoustic energy degree/dB	198.4	195.4	195.3	195.2	195.1	195.0	194.8	194.0	188.0

Table 1. Table of laser induced acoustic characteristic parameters at different incident angles before convergence

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Inincident angle/(°)	0
Spot area/cm²	14.93
Transmissivity	98.5%
Spot power density/kW·cm²	6.60
Acoustical power/W	731.2
Acoustic energy degree/dB	202.4
Photoacoustic conversion efficiency	7.4×10⁻³
Effective acoustic power/W	146.2
Effective acoustic energy degree/dB	198.4

Table 2. Table of laser induced acoustic characteristic parameters at vertical incidence after convergence

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Ke Li, Jiaping Liang, Yao Yao, Yang Zhang, Siguang Zong, Tao Liu. Three-dimensional numerical characteristics of optical-to-acoustic transboundary communication in vaporization mechanism[J]. Infrared and Laser Engineering, 2023, 52(11): 20230100

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