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相关概念视频

Photoelectric Effect02:26

Photoelectric Effect

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When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
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Photoluminescence: Applications01:14

Photoluminescence: Applications

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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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Biasing of P-N Junction01:16

Biasing of P-N Junction

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The operation of a p-n junction diode involves various biasing conditions, including forward bias, reverse bias, and equilibrium.
In equilibrium, no external voltage is applied across the p-n junction. The depletion region is formed at the junction interface due to the diffusion of carriers, which leaves behind charged dopants, acceptors on the p-side, and donors on the n-side. These immobile charges create an electric field that prevents further diffusion of carriers. The related energy band...
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MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

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Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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魔幻二氧化用于广泛调节的光子集成电路

Bruno Lopez-Rodriguez1, Naresh Sharma1, Zizheng Li1

  • 1Department of Imaging Physics (ImPhys), Faculty of Applied Sciences, Delft University of Technology, 2628 CJ Delft, The Netherlands.

ACS photonics
|March 24, 2025
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概括

研究人员开发了一种新方法来精确控制二氧化的热光学特性,使单个光子芯片上的双向热调节成为可能. 这一突破增强了可调节的光子设备,并减少了热交响.

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科学领域:

  • 光子学和光学工程的工程.
  • 材料科学 材料科学 材料科学
  • 集成光学 集成光学 集成光学

背景情况:

  • 集成光子电路对于数据通信,传感和光学计算至关重要.
  • 可调节和可重新配置的光子元件通常使用热光学效应.
  • 标准材料的调节窗口有限,缺乏双向的热调节功能.

研究的目的:

  • 开发一种用于光子设备的确定性热光学调的方法.
  • 在单个芯片上实现双向热调节.
  • 为了提高可调性并减少集成光子设备中的热交叉声.

主要方法:

  • 优化了二氧化的沉积条件,使用感应合的等离子体化学蒸汽沉积 (ICPCVD).
  • 在无形碳化 (a-SiC),化 (SiN) 和在绝缘体 (SOI) 平台上证明正负波长转移的决定性集成.
  • 使用单个加热器制造了一个可调节的合环光学波导 (CROW),并采用低温沉积和升起用于设备隔离.

主要成果:

  • 在没有显著的光学损失的情况下,实现了二氧化的确定性热光学调整.
  • 在一个单一芯片上,在多个光子平台上展示了双向波长转移.
  • 观察到高达10倍的热光学调性和大热环共振器的改善,变化低至1.5 pm/°C.
  • 通过设备隔离,减少了至少2个数量级的热交叉声.

结论:

  • 为二氧化开发的ICPCVD方法可以精确控制热光学特性.
  • 这种技术允许在单个光子芯片上进行双向热调节,这是一个显著的进步.
  • 这些发现为新的光子架构铺平了道路,提高了可调性和减少了热交叉声.