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相关概念视频

Passive Filters01:27

Passive Filters

1.0K
Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff...
1.0K
Active Filters01:25

Active Filters

1.4K
Active filters are electronic circuits that use operational amplifiers (op-amps), resistors, and capacitors to filter out unwanted frequency components from a signal. A first-order low-pass active filter is designed to pass signals with a frequency lower than a certain cutoff frequency and attenuate frequencies higher than that cutoff frequency. The transfer function for a first-order low-pass active filter is:
1.4K
Properties of Enantiomers and Optical Activity02:24

Properties of Enantiomers and Optical Activity

21.8K
It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their applications. Just as our feet, which are chiral, interact uniquely with chiral objects, such as a pair of shoes, but identically with achiral socks, enantiomers of a molecule exhibit different properties only when they interact with other chiral media. An example of a significant implication from this facet is the phenomenon known as optical activity,...
21.8K
Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

11.0K
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
11.0K
Stereoisomerism02:52

Stereoisomerism

14.1K
Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...
14.1K
Vision01:24

Vision

60.3K
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
60.3K

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相关实验视频

Updated: Feb 12, 2026

Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
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Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

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一个二级的光学Butterworth Fabry-Pérot过器.

Zeyang Li1, Abhishek V Karve1, Xin Wei1

  • 1Department of Applied Physics, Stanford University, Stanford, California 94305, USA.

The Review of scientific instruments
|February 11, 2026
PubMed
概括
此摘要是机器生成的。

我们开发了一种新的光学波器,使用Fabry-Pérot腔中的合极化模式. 这项技术使更窄带宽的平板过器能够在通信和传感应用中改进信号处理.

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Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters
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Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters

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In Vitro Enzyme Measurement to Test Pharmacological Chaperone Responsiveness in Fabry and Pompe Disease
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In Vitro Enzyme Measurement to Test Pharmacological Chaperone Responsiveness in Fabry and Pompe Disease

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相关实验视频

Last Updated: Feb 12, 2026

Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
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Author Spotlight: Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon

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Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters
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Optical Scatter Microscopy Based on Two-Dimensional Gabor Filters

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In Vitro Enzyme Measurement to Test Pharmacological Chaperone Responsiveness in Fabry and Pompe Disease
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科学领域:

  • * 光学是指光学上的一个部分.
  • * 光子学是一种光子学.
  • * * 信号处理 信号处理

背景情况:

  • *平板传输带过器对于信号处理至关重要,提高了检测灵敏度和功率效率.
  • *光学过器通常使用带宽超过100GHz的介电堆,限制了窄带宽应用.
  • *法布里-佩罗洞是单极共振器,适用于高效的单频传输,但构建多极过器在光学领域具有挑战性.

研究的目的:

  • * 提出并实施一款二级Butterworth型光学波器,其平面传输带狭窄.
  • * 弥合现有的宽带光学过器与更窄带宽解决方案的需求之间的差距.
  • * 展示一种在光学领域实现窄带宽平板过器的新方法.

主要方法:

  • * 在一个单一的双镜法布里-佩罗腔内实现了二级巴特沃斯型光学过器.
  • * 利用两个极化模式的合来实现平面响应.
  • * 描述过器的性能,包括通带宽,止带抑制和插入损失.

主要成果:

  • * 已经证明了2.68{1}GHz的狭窄平面传输带宽.
  • * 实现了43dB的最大停止带抑制.
  • * 测量输入传输带输入损失为2.2(1) dB,带外功率抑制作为脱调的第四功率.

结论:

  • * 拟议的方法可以创建显著更窄的带宽平板光学过器.
  • *这种方法可扩展到更窄的过器,为激光相位噪声和LIDAR灵敏度提供了潜在的改进.
  • *开发的过技术为拉曼光谱等应用提供更高质量的窄带过.