Dr. Shaocheng Wang Profile

Dr. Shaocheng Wang

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Proceedings Article | 12 April 2023 Paper

Study on the ablation performance of semiconductor lasers on different materials

Shaocheng Wang, Sibo Wang, Baoyu Xing, Yanhua Cao, Dianya Tu

Proceedings Volume 12565, 1256540 (2023) https://doi.org/10.1117/12.2665908

KEYWORDS: Doping, Laser ablation, Semiconductor lasers, Crystals, Satellites, Laser energy, High power lasers, Error analysis, Reflection, Pollution

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Laser ablation micropropulsion technology has the characteristics of high specific impulse, high thrust ratio and precise thrust control, which is a good choice for many micro/nano satellite power systems such as meteorology, remote sensing and reconnaissance. In order to provide optimal power support for micro-nano satellites and improve the propulsion performance of laser ablation microthrust, in this paper, the ablative material is GAP+3% nano carbon powder, doped with 5%, 8%, 10%, 15% LiAlH₄ or 5%, 10%, 20%, 30% AP, respectively. A semiconductor laser with a wavelength of 975nm was used to ablate different doping substances and materials with different doping ratios, and the ablative properties were compared. The mechanism of the difference in ablative properties of different materials was analyzed by electron microscopy. The results show that LiAlH₄ and AP can improve the laser ablation performance when they are mixed into GAP as oxidants because of their strong oxidability. When 10% LiAlH₄ was added into the material, the average values of specific impulse and single impulse were 235s and 13.36μN·s, respectively. The propulsive performance parameters of 10% doped AP are slightly lower, but the error is smaller and the propulsive performance is more stable.

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