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Conjugated polymer-based broadband terahertz wave modulator

机译:共轭聚合物基宽带太赫兹波调制器

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摘要

An optical broadband terahertz (THz) wave modulator, based on a polymer-inorganic interface, is investigated. The THz pulse transmission was efficiently modulated by an external continuous wave (CW) laser. The effects on the poly[2-methoxy-5-(2'-ethylhexyloxy)-1, 4-phenylenevinylene] (MEH-PPV)/silicon interface were measured by THz time-domain spectroscopy. The modulation factor reached 99.6%, at an external laser beam intensity of 6.3 W/cm~2. In the proposed THz-CW system, a significant fall (in both THz transmission and reflection) was also observed at the MEH-PPV/Si interface. This reduction in THz transmission and reflection has been induced by absorption at the MEH-PPV/Si interface. The results show that an optically controlled polymer/inorganic broadband THz modulator can be realized.
机译:研究了基于聚合物-无机界面的光宽带太赫兹(THz)波调制器。通过外部连续波(CW)激光有效地调制了THz脉冲传输。通过THz时域光谱法测量了对聚[2-甲氧基-5-(2'-乙基己氧基)-1,4-亚苯基亚乙烯基](MEH-PPV)/硅界面的影响。在外部激光束强度为6.3 W / cm〜2时,调制系数达到了99.6%。在提出的THz-CW系统中,在MEH-PPV / Si界面处也观察到明显的下降(THz透射和反射)。通过在MEH-PPV / Si界面处的吸收,已引起THz传输和反射的降低。结果表明,可以实现光控聚合物/无机宽带太赫兹调制器。

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