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Microstructure formation on the surface of aluminum target by a nanosecond pulsed laser

机译:纳秒脉冲激光在铝靶表面形成微观结构

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In this paper, formation of microstructure on the surface of aluminum target is investigated. The target surface was irradiated by trains of nanosecond Nd:YAG laser in ambient air. The irradiation was performed at trains of 1 to 500 laser pulses with energies ranging from 0.1 to 0.4 mJ. Such laser pulse energies provided intensities at the order of 10~7 W/cm~2 at the target surface. Using optical microscope, the irradiated region of the target surface was characterized by measuring of microstructures depth and length. In this study the effects of laser pulse energy and the number of pulses in microstructure formation was inspected. The results show quasi-Gaussian profile for the distributions of microstructure depth and length.
机译:本文研究了铝靶表面微观结构的形成。在环境空气中,用纳秒级的Nd:YAG激光束照射目标表面。照射是在1到500个激光脉冲序列中进行的,能量范围为0.1到0.4 mJ。这种激光脉冲能量在目标表面提供的强度约为10〜7 W / cm〜2。使用光学显微镜,通过测量微观结构的深度和长度来表征目标表面的照射区域。在这项研究中,研究了激光脉冲能量和脉冲数量在微观结构形成中的影响。结果表明,微观结构的深度和长度分布具有准高斯分布。

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