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相关概念视频

Non-ohmic Devices00:51

Non-ohmic Devices

1.5K
In most substances, the current flow is proportional to the voltage applied to it. A simple relationship between the values of current, voltage, and resistance is known as Ohm's law. Nonohmic devices do not exhibit a linear relationship between voltage and current. One such device is the semiconducting circuit element known as a diode. A diode is a circuit device that allows current flow in only one direction.
Consider a simple circuit consisting of a battery, a diode, and a resistor. A...
1.5K
Nonlinear Pharmacokinetics: Causes of Nonlinearity01:22

Nonlinear Pharmacokinetics: Causes of Nonlinearity

706
Nonlinearity in drug pharmacokinetics is caused by various factors influencing how a drug is absorbed, distributed, metabolized, and excreted. Understanding these nonlinear processes is crucial for predicting drug behavior in the body and optimizing drug dosing regimens.
Nonlinear drug absorption can occur when the process is rate-limited by solubility, carrier-mediated transport systems, or saturation of the presystemic gut wall or hepatic metabolism. For instance, high doses of riboflavin...
706
Semiconductors01:22

Semiconductors

1.4K
There is variation in the electrical conductivity of materials - metals, semiconductors, and insulators that are showcased with the help of the energy band diagrams.
Metals such as copper (Cu), zinc (Zn), or lead (Pb) have low resistivity and feature conduction bands that are either not fully occupied or overlap with the valence band, making a bandgap non-existent. This allows electrons in the highest energy levels of the valence band to easily transition to the conduction band upon gaining...
1.4K

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相关实验视频

Updated: Jan 15, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

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可编程芯片上的非线性光子学

Ryotatsu Yanagimoto1,2, Benjamin A Ash3, Mandar M Sohoni3

  • 1School of Applied and Engineering Physics, Cornell University, Ithaca, NY, USA. ryotatsu.yanagimoto@ntt-research.com.

Nature
|October 8, 2025
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种可重新配置的非线性光学设备. 这种可编程光子芯片可以动态控制光线, 克服量子和经典技术中的固定功能限制.

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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

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相关实验视频

Last Updated: Jan 15, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.6K
Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
05:57

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

8.5K
Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
12:19

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

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科学领域:

  • 光子学和非线性光学
  • 量子和古典技术
  • 材料科学

背景情况:

  • 非线性光学设备对于光子技术至关重要,但在制造后通常具有固定的功能.
  • 这种不灵活性限制了它们在动态场景中的应用.
  • 现有的设备缺乏重新配置,阻碍了自适应光学系统的发展.

研究的目的:

  • 展示一种具有可编程非线性光学功能的新型光子装置.
  • 展示任意可重新配置的二维非线性分布.
  • 克服固定功能的非线性光学设备的局限性.

主要方法:

  • 在光板波导中利用电场诱导的二次非线性易感性 (χ(2).
  • 通过使用光导层和光学编程大规模并行控制电场的工程可编程性.
  • 已经证明了第二和生成 (SHG) 的光谱,空间和空间光谱工程.

主要成果:

  • 实现了可任意重构的二维分布的 χ(2) 非线性.
  • 在现场展示了准相匹配格子结构的反向设计.
  • 通过实时反来弥补操作和环境的波动.

结论:

  • 开发的设备打破了非线性光学中的传统"一个设备-一个功能"模式.
  • 可编程非线性光学可实现需要快速设备重新配置的应用.
  • 潜在的应用包括可编程的量子门,可适应的光学信号处理和先进的传感.