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Proceedings Paper

Experimental underwater scanning imaging system using pulsed blue-green lasers
Author(s): Lei Wang; Zhi-yong Xu; Qi-heng Zhang; Hua-chuang Wang; Xue-gang Yu; Rui-jie Nie
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Paper Abstract

A new, simple and compact experimental laser scanning imaging system is introduced for underwater imaging, and the characteristics of the system are analyzed in this paper. The system consists of the illuminator, optical scanning system, optical receiving system, narrow band filters, high-sensitivity gated image sensor, synchronous control and data acquisition system and power supply and cooling system. The illuminator is a lump-pumped, Q-switched, frequency doubled Nd:YAG pulsed laser operating at 532 nm with a frequency of 50 Hz. The receiver is a self-made gated intensified charge coupled device (ICCD). As a result, gated super Gen-II image intensifier and PAL format charge-coupled device (CCD) camera are assembled to meet the requirements. The coupling gated ICCD has a sensitivity of approximated 10-5lx, and the minimum gate width can reach to 40 ns. And a set of scanning structure which only uses one mirror is used in the experimental system. In addition, the performance parameters are listed. Finally, the detection capabilities of the imaging system are theoretically analyzed in typical seawater. The analysis indicates that the detection depth of the system can reach to 16 m in the clear seawater.

Paper Details

Date Published: 20 August 2011
PDF: 8 pages
Proc. SPIE 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, 81921K (20 August 2011); doi: 10.1117/12.900130
Show Author Affiliations
Lei Wang, Institute of Optics and Electronics (China)
Graduate School of the Chinese Academy of Sciences (China)
Zhi-yong Xu, Institute of Optics and Electronics (China)
Qi-heng Zhang, Institute of Optics and Electronics (China)
Hua-chuang Wang, Institute of Optics and Electronics (China)
Xue-gang Yu, Institute of Optics and Electronics (China)
Rui-jie Nie, Institute of Optics and Electronics (China)
Graduate School of the Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 8192:
International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging

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