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相关概念视频

Group Polarization01:01

Group Polarization

Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

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

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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Laser diode driver on a programmable system on a chip.

The Review of scientific instruments·2024
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在空间复杂化全息图中对象对齐,应用于偏振传感.

Filip Krajinić1,2, Petar Atanasijević1, Peđa Mihailović1

  • 1University of Belgrade, School of Electrical Engineering, Bulevar kralja Aleksandra 73, 11120 Belgrade, Serbia.

The Review of scientific instruments
|July 17, 2024
PubMed
概括

一个新的算法使用多个参考波精确地对齐数字全息中的对象. 这种方法提高了极化传感的准确性,为各种全息测量提供了广泛的应用.

科学领域:

  • 光学和光子学 在光学和光子学.
  • 全息影像的使用方法.
  • 极化传感器 极化传感器

背景情况:

  • 数字全息通常使用单一的参考波来进行对象重建.
  • 多个参考波为先进的传感提供了潜力,但也带来了对齐挑战.
  • 精确的对象对齐对于数字全息中的定量分析至关重要.

研究的目的:

  • 开发和验证一种新的算法,用于在数字全息中精确对象对齐,使用多个球形参考波.
  • 将这个算法应用到使用直角偏振参考波的偏振传感.
  • 为了证明该算法的多功能性,用于各种数字全息应用.

主要方法:

  • 一个新的算法被设计用于对象对齐在多参考波数字全息.
  • 一个简化,可调整的全息设置是使用衍射格设计的,以产生两个对称的参考波.
  • 算法的性能是使用两条直角偏振参考波的偏振传感来评估的.

主要成果:

  • 该算法在对象对齐方面实现了高准确度,用于极化传感.
  • 极化元件旋转角度的平均绝对误差为0.71° (强度) 和2.96° (相位) 得到.
  • 开发的全息设置简单,可调节,并且有效地产生所需的参考波.

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结论:

  • 提出的算法在数字全息中提供了强大的和准确的对象对齐,具有多个球形参考波.
  • 这种技术显著提高了极化传感能力.
  • 该算法的一般适用性扩展到任何使用多个球形参考波的数字全息测量.