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Updated: Jul 12, 2025

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实验性演示,通过奇尔普式微型组合来控制连贯无流体辐射的脉冲长度

Takashi Tanaka1, Yuichiro Kida2, Satoshi Hashimoto3

  • 1RIKEN SPring-8 Center, Koto 1-1-1, Sayo, Hyogo 679-5148, Japan.

Physical review letters
|October 20, 2023
PubMed
概括

研究人员展示了一种新的方法来缩短自由电子激光 (FEL) 脉冲到单周期的持续时间,通过使用曲的微积分来抑制滑动效应. 这一突破使得更短,更精确的激光脉冲能够用于先进的应用.

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相关概念视频

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

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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