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Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
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Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...

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相关实验视频

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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
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高功率的图秒脉冲的凯尔·索利顿微.

Liu Yang1,2,3, Keisuke Ogawa1, Ryomei Takabayashi2

  • 1Keio University, Department of Physics, Faculty of Science and Technology, Yokohama 223-8522, Japan.

Physical review letters
|February 16, 2026
PubMed
概括
此摘要是机器生成的。

研究人员探索了使用Kerr单离子微在双断裂微复原器中产生高功率光学频率的新方法. 这一发现克服了这些紧型设备在功率和效率方面的局限性.

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科学领域:

  • 光学和光子学 在光学和光子学.
  • 非线性光学是非线性光学.
  • 凝聚物质物理学 凝聚物质物理学

背景情况:

  • 微振器中的散射式克尔单子是产生频率的关键.
  • 当前输出功率和转换效率的局限性阻碍了实际应用.

研究的目的:

  • 为了发现Kerr单离子微的新操作模式.
  • 为了提高输出功率和转换效率.
  • 为了实现皮秒脉冲宽度和低重复率.

主要方法:

  • 利用双断层晶体微复原器中的强模式相互作用.
  • 实验演示单个soliton微的微.
  • 使用Lugiato-Lefever方程进行数值分析.

主要成果:

  • 达到高达24和38mW的平均功率.
  • 证明了两位数的百分比转换效率.
  • 观察到的微波单子重复率低至15.5 GHz.
  • 获得的皮秒脉冲宽度.

结论:

  • 未经探索的方案产生高功率,高效的克尔单离子微.
  • 双断裂微振器对于提高性能至关重要.
  • 结果提升了微共振器频率技术和单子物理学的理解.