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相关概念视频

X-ray Crystallography02:18

X-ray Crystallography

23.8K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
23.8K
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

1.0K
When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
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相关实验视频

Updated: Jun 5, 2025

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

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将任意相位配置文件编码为具有可控制偏振状态的二维衍射顺序.

Ruizhe Zhao1, Xin Li1, Guangzhou Geng2

  • 1Beijing Engineering Research Center of Mixed Reality and Advanced Display, Key Laboratory of Photoelectronic Imaging Technology and System of Ministry of Education of China, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China.

Nanophotonics (Berlin, Germany)
|December 5, 2024
PubMed
概括
此摘要是机器生成的。

这项研究提出了一种新的超表面方法,用于同时控制多个衍射顺序中的光特性. 这可以为先进的光学应用提供量身定制的强度和极化.

关键词:
射顺序调制的调制是指射顺序的调制.双相方法是一种双相方法.metasurface 地表的表面是什么

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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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Author Spotlight: Non-Invasive Imaging of Complex Bio-Structures Using Polarization-Sensitive Two-Photon Microscopy
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Author Spotlight: Non-Invasive Imaging of Complex Bio-Structures Using Polarization-Sensitive Two-Photon Microscopy

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相关实验视频

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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

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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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Author Spotlight: Non-Invasive Imaging of Complex Bio-Structures Using Polarization-Sensitive Two-Photon Microscopy
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科学领域:

  • 光学和光子学 在光学和光子学.
  • 材料科学 材料科学 材料科学

背景情况:

  • 以可控强度生成2D衍射顺序对于光学子和并行激光制造等应用至关重要.
  • 现有的方法难以同时调整多个光参数 (强度,偏光) 跨不同的衍射顺序.

研究的目的:

  • 展示一种将任意相位形状和可控制的极化状态编码为不同的衍射顺序的方法.
  • 通过同时操纵输出光的多个参数来实现并行功能.

主要方法:

  • 采用双相方法,精心设计的元表面.
  • 使用Gerchberg-Saxton (GS) 算法编码十六个独立的全息图.
  • 编码全息图到一个4x4数组的衍射顺序与操纵的极化状态.

主要成果:

  • 成功将16个独立的全息图像编码成4x4衍射顺序.
  • 证明了每个衍射顺序的可控制的极化状态,使用Stokes参数进行验证.
  • 在富里埃平面上观察到预定义的全息图像,具有量身定制的属性.

结论:

  • 拟议的超表面方法有效地同时调整输出衍射顺序的多个属性.
  • 这种方法促进了并行功能,如光谱极化成像,并增强了光通信系统.