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相关概念视频

Full wave rectifier01:22

Full wave rectifier

1.1K
A full-wave rectifier is a device that converts alternating current (AC) to direct current (DC) and is more efficient than its half-wave counterpart. It typically includes a center-tapped transformer, two diodes, and a load resistor. The secondary winding of the transformer is divided to provide two equal voltages of opposite polarities, which is the pivotal element of full-wave rectification.
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Bridge rectifier01:24

Bridge rectifier

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The bridge rectifier is essential in electronics for efficiently converting alternating current (AC) to direct current (DC). Comprised of four diodes configured in a bridge layout, this rectifier effectively processes both the positive and negative halves of the AC waveform, making it superior to half-wave and full-wave center-tapped rectifiers in terms of voltage regulation and output stability.
Operationally, the bridge rectifier allows current flow through two of its diodes during each...
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相关实验视频

Updated: Jun 25, 2025

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier
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从可扩展的光学校正中产生260 MV/cm的电离化特拉赫兹波.

Hyeongmun Kim1,2, Chul Kang3, Dogeun Jang4

  • 1Advanced Photonics Research Institute, GIST, Gwangju, 61005, Korea.

Light, science & applications
|May 27, 2024
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概括

强烈的太赫兹 (THz) 波可以电离物质. 研究人员从酸中产生了强大的15-THz波,实现了高电场强度,并证明了THz诱导的等离子体形成.

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科学领域:

  • 物理 物理学 物理
  • 材料科学 材料科学 材料科学
  • 光学是什么?光学是什么?光学是什么?

背景情况:

  • 太赫兹 (THz) 波通常被认为是非电离的,因为光子的能量很低.
  • 然而,缩的THz辐射可以导致电离事件.
  • 了解强烈的THz波生成和相互作用对于先进的应用至关重要.

研究的目的:

  • 为了证明电离,多循环的太赫兹波的产生.
  • 为了描述这些强烈的THz波的特性.
  • 研究强烈的THz波与固体目标的相互作用,诱导电离和等离子体形成.

主要方法:

  • 使用大面积酸晶体对150泰拉瓦特激光脉冲进行相匹配光学校正.
  • 对THz波能量,脉冲持续时间和焦点尺寸的全面描述.
  • 使用一次性THz干扰仪和数值模拟进行光谱和时间分析.

主要成果:

  • 产生15THz波的电场强度高达每厘米260兆伏.
  • 通过THz诱导的道化电离和固体目标中的等离子形成来证实电离能力.
  • 详细测量THz脉冲持续时间和频谱.

结论:

  • 强烈的THz波可以产生具有显著强度的电场,能够电离物质.
  • 这项研究为探索气体中非扰动性THz驱动的电离化开辟了道路.
  • 在非线性和相对论THz物理和等离子体应用方面的进步潜力.