Mr. Jinbao Yang Profile

Jinbao Yang

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Proceedings Article | 30 April 2024 Paper

Design of high power 532nm solid pulse laser

Yachao Liu, Jinbao Yang, Aman Wei, Jianyu Pan, Chen Yang, Xiaohang Wang, Jun Zhang

Proceedings Volume 13155, 131550M (2024) https://doi.org/10.1117/12.3016613

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In recent years, with the development of laser technology, lasers have provided a new way for underwater optoelectronic detection of targets. Due to the unique spectral, temporal, and spatial characteristics of lasers, blue-green lasers have a strong ability to penetrate seawater. Therefore, using blue-green lasers as light sources can significantly increase the underwater detection distance. This article takes into account the blue-green window effect of seawater, selects a 532nm solid-state pulse laser as the active light source, and selects a gated image intensifier with a gate width of nanosecond accuracy for underwater imaging.The high-power 532nm solid-state laser mainly consists of a laser, a laser power drive unit, a temperature control unit, and a beam divergence angle control unit. The laser adopts a diode pumped Nd: YAG pulse laser, with a wavelength of 532nm and adjusTab.repetition frequency. It has switch control, laser emission control, and output Pin signal. In order to ensure the best field of view, the laser divergence angle and the imaging detector reception angle are synchronously controlled in linkage.By calculating and using numerical control to maintain the divergence angle and reception angle consistent, it meets the field of view requirements and provides technical support for underwater target detection and recognition.

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