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相关概念视频

Nuclear Transmutation03:20

Nuclear Transmutation

Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed protons being...
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in the...
Mesh Analysis for AC Circuits01:12

Mesh Analysis for AC Circuits

In the domain of radio communication, the significance of impedance matching must be considered. It is crucial to ensure the efficient transmission of signals between radio transmitters and receivers. Achieving this balance involves using impedance-matching circuits, with one fundamental configuration comprising a resistor, capacitor, and inductor.
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
Generation of Three-Phase Voltage01:21

Generation of Three-Phase Voltage

A three-phase AC generator has a rotor with a rotating magnet placed within the stator mounted with the stationary three-phase winding to generate three-phase voltages via mutual induction. These windings are evenly distributed around the inner circumference of the stator and are arranged 120 electrical degrees apart. Three-phase stator windings consist of three separate coils or groups of coils, known as phases, each connected in Y (star) configuration or Delta configuration.
As the rotor...
Three-Phase Voltages01:30

Three-Phase Voltages

A three-phase generator produces three voltages that are equal in magnitude but have a phase difference of 120 degrees. This identical magnitude and equal phase separated voltages are known as the balanced voltages and help to minimize power loss while ensuring a steady delivery of energy to connected loads. As voltage sources in a three-phase system can be configured in a wye or a delta formation, the loads connected to these systems can also be arranged in either configuration. This...
Carrier Generation and Recombination01:22

Carrier Generation and Recombination

Carrier generation is the process by which electron-hole pairs (EHPs) are created within the semiconductor. In direct-bandgap semiconductors, such as gallium arsenide (GaAs), this occurs efficiently when energy absorption prompts valence electrons to leap into the conduction band, leaving behind holes.
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
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相关实验视频

Updated: May 11, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

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在化波导中相匹配的第三和生成.

Surendar Vijayakumar1, Kaustubh Vyas2, Daniel H G Espinosa2

  • 1Institute of Optics, University of Rochester, 480 Intercampus Dr, Rochester, NY 14627, USA.

Nanophotonics (Berlin, Germany)
|August 26, 2024
PubMed
概括
此摘要是机器生成的。

化波导使得高效的第三和生成 (THG) 成为可能,为先进的应用产生可见光. 本研究详细介绍了这些CMOS兼容设备的相位匹配和效率.

关键词:
频率转换器频率转换器波的产生和的产生.非线性光学是一种非线性光学.化是一种化.波导波导是指导波的

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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

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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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相关实验视频

Last Updated: May 11, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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科学领域:

  • 光子学和波导技术 波导技术
  • 非线性光学是非线性光学.
  • 材料科学 材料科学 材料科学

背景情况:

  • 化 (SiN) 波导为非线性光学过程提供了一个有前途的平台,因为它们具有很大的非线性易感性和CMOS兼容性.
  • 第三和生成 (THG) 是一种关键的非线性过程,用于从红外源生成可见光,在光谱学,计量学和光通信中具有应用.
  • 在SiN波导中高效的THG对于开发紧且集成的光子设备至关重要.

研究的目的:

  • 在化波导中演示和描述第三和的生成.
  • 为了实现基本横向模式和更高阶的TM模式之间的相位匹配,以实现高效的频率转换.
  • 研究波导体几何学对相匹配波长和转换效率的影响.

主要方法:

  • 制造具有控制尺寸的化波导.
  • 使用基本波长为1,596 nm的第三波生成的实验设置.
  • 用远场成像和光谱分析在532nm处生成的第三波的表征.
  • 作为波导宽度函数的相匹配波长的系统测量.

主要成果:

  • 在化波导中成功演示了第三和的生成.
  • 在532 nm的基本横向模式和TM02模式之间实现了相匹配.
  • 实验确定了波导宽度依赖相位匹配的波长.
  • 在660μm的相互作用长度上,测量的峰值功率-规范化转换效率为5.78 × 10-7%/W2.

结论:

  • 化波导对于高效的第三和生成是有效的,为可见光源提供了可行的通道.
  • 证明的相匹配方案和效率突出显示了SiN光子在集成非线性光学应用中的潜力.
  • 进一步优化波导设计和制造,可以提高超快脉冲表征,电信监控和子生成的性能.