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相关概念视频

Confocal Fluorescence Microscopy01:16

Confocal Fluorescence Microscopy

Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
Muscle Stimulation Frequency01:22

Muscle Stimulation Frequency

The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...

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相关实验视频

Updated: May 8, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

像激光一样的动态与虚拟增益由复杂的频率激发驱动.

Boyi Xue1, Ruixiang Zhang1, Yicheng Zhu1

  • 1State Key Laboratory of Photonics and Communications Global College, Shanghai Jiao Tong University, Shanghai, China.

Nature communications
|March 2, 2026
PubMed
概括
此摘要是机器生成的。

在被动微腔体中的虚拟增益模仿了没有活跃介质的激光动态. 这一突破使增强的光物质相互作用和完美的吸收成为可能,为先进的光学设备铺平了道路.

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Photostimulation by Femtosecond Laser Activates Extracellular-signal-regulated Kinase (ERK) Signaling or Mitochondrial Events in Target Cells
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Published on: July 6, 2019

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
07:42

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

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相关实验视频

Last Updated: May 8, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Photostimulation by Femtosecond Laser Activates Extracellular-signal-regulated Kinase (ERK) Signaling or Mitochondrial Events in Target Cells
11:00

Photostimulation by Femtosecond Laser Activates Extracellular-signal-regulated Kinase (ERK) Signaling or Mitochondrial Events in Target Cells

Published on: July 6, 2019

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
07:42

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Published on: December 15, 2021

科学领域:

  • 非赫米斯式光子学非赫米斯式光子
  • 量子光学就是一个量子光学.
  • 材料科学是一种材料科学.

背景情况:

  • 复杂频率激发提供了对光物质相互作用的新控制.
  • 虚拟损失已经被探索为连贯的完美吸收.
  • 光学系统中的虚拟增益仍未得到充分探索.

研究的目的:

  • 从理论和实验上证明激光类似的动力学使用虚拟增益在被动微腔.
  • 调查虚拟增益在抵消物质和辐射损失中的作用.
  • 探索激光类似行为和完美的吸收的共存.

主要方法:

  • 使用复杂频率激发在被动低声画廊模式的微腔中.
  • 虚拟增益效应的理论建模和实验验证.
  • 分析传导率,响应模式和值类现象.

主要成果:

  • 通过虚拟增益在被动微腔中展示了类似激光的动态.
  • 观测到的瞬间传导度超过单位,在近乎稳定的值中和.
  • 确定了一个类似于值的点,导致一个分歧的,指数级增长的反应,模仿激光瞬态积累.
  • 实现了强大的共存激光般的行为和完美的吸收,可通过虚拟增益调节.

结论:

  • 虚拟增益提供了一个多功能框架,用于在被动系统中操纵非赫密斯光物质相互作用.
  • 这种方法绕过了对人口逆转或活性介质的需求,与传统激光不同.
  • 潜在的应用包括先进的传感,光通信和能量存储设备.