Simulation and optical optimization of deep-sea hydrothermal velocity measurement system

Qianjing Xiong; Wenli Peng; Jian Fang; Benli Yu; Shenglai Zhen

doi:10.1117/12.2592357

26 January 2021 Simulation and optical optimization of deep-sea hydrothermal velocity measurement system

Qianjing Xiong, Wenli Peng, Jian Fang, Benli Yu, Shenglai Zhen

Proceedings Volume 11767, 2020 International Conference on Optoelectronic Materials and Devices; 117670N (2021) https://doi.org/10.1117/12.2592357
Event: 2020 International Conference on Optoelectronic Materials and Devices, 2020, Guangzhou, China

Abstract

The deep-sea hydrothermal velocity measurement system based on laser Doppler is mainly used for in-situ accurate measurement of deep-sea hydrothermal velocity. Due to the high-pressure environment of the deep-sea hydrothermal area, the optical window of the measurement system will be deformed under pressure, attenuating the energy of the scattered light received by the system. The system selects sapphire as the compressive window material, uses finite element analysis to simulate the compressive deformation of the optical window at a sea depth of 4000 meters (40MPa), and fits the deformed optical window to the optical design software. The simulation result shows the deep-sea high pressure will reduce the energy utilization rate of the measurement system by 43%. Through the optimized design of the optical system, the laser intensity utilization rate has been increased by 52.2% to meet actual application requirements.

Citation Download Citation

Qianjing Xiong, Wenli Peng, Jian Fang, Benli Yu, and Shenglai Zhen "Simulation and optical optimization of deep-sea hydrothermal velocity measurement system", Proc. SPIE 11767, 2020 International Conference on Optoelectronic Materials and Devices, 117670N (26 January 2021); https://doi.org/10.1117/12.2592357

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