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相关实验视频

Updated: May 4, 2026

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
10:54

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Published on: July 8, 2013

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特拉赫兹半导体异构结构激光器

Rüdeger Köhler1, Alessandro Tredicucci, Fabio Beltram

  • 1NEST-INFM and Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy. koehler@nest.sns.it

Nature
|May 10, 2002
PubMed
概括
此摘要是机器生成的。

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研究人员使用半导体异构结构开发了一种新的单立体太赫兹注射激光. 这一突破解决了对紧,高效的太赫兹源的需求,为新的应用铺平了道路.

科学领域:

  • 固态物理 固态物理
  • 光电学是指光电子产品.
  • 半导体设备物理学 半导体设备物理

背景情况:

  • 半导体设备对于在各种频谱中产生电磁辐射至关重要.
  • 太赫兹 (THz) 间隙 (1-10 THz) 由于缺乏紧的,低功率的固态源,仍未得到充分开发.
  • 潜在的THz应用包括化学检测,天文学和医学成像.

研究的目的:

  • 报告一款新的单立体太赫兹注射激光器.
  • 为欠发达的THz地区展示一个可行的固态资金来源.

主要方法:

  • 在GaAs/AlGaAs异构结构的传导带中利用了小频段间的过渡.
  • 开发了一种单体注射激光设计.

主要成果:

  • 原型激光器以4.4 THz发射单模式.
  • 达到高输出功率 (>2mW) 的低门电流密度 (几百个A cm(-2)) 到50K.

结论:

  • 开发的太赫兹注射激光器显示了对实际光子系统的重大前景.
  • 进一步开发可能会导致连续波和高温操作.

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