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Updated: Jun 29, 2025

Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
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Published on: July 2, 2012

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激光脉冲持续时间对激光诱导周期性纳米结构形成动态的影响

Reina Miyagawa, Tetsuyuki Ohgai, Shusuke Yoshikawa

    Optics express
    |April 4, 2024
    PubMed
    概括

    SiC上的激光诱导周期性表面结构 (LIPSS) 从纳米粒子粗演变为两种不同的LIPSS类型,脉冲数增加. 保持结晶性对于结构转变至关重要,与导致多晶的较长脉冲持续时间不同.

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    NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

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    A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
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