基于局部表面等离子体共振的大功率太赫兹光导天线

2010 International Conference on Optical MEMS and Nanophotonics Pub Date : 2010-12-17 DOI:10.1109/OMEMS.2010.5672186

Sang-Gil Park, Yongje Choi, Minwoo Yi, Jun-Hyuk Choi, K. Jin, Jong-Chul Ye, Jaewook Ahn, K. Jeong

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引用次数: 1

摘要

这项工作提出了一种等离子体增强光导天线，用于高功率太赫兹辐射，该天线使用了分层图案银纳米岛的局部表面等离子体共振。光导区域上的银纳米岛增强了泵浦激光束的电幅值和泵浦光束的散射，从而放大了向基片传输的光功率。结果表明，光激发载流子具有较高的跃迁速率。等离子体增强天线发射太赫兹波的峰间振幅比没有银纳米岛的光导天线提高了1.6倍。

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High power THz photoconductive antenna using localized surface plasmon resonance

This work presents a plasmon-enhanced photo-conductive antenna for high power THz emission using the localized surface plasmon resonance of hierarchically patterned silver nanoislands. The silver nanoislands on a photoconductive region enhance the electrical amplitude of pump laser beam and the scattering of the pump beam so that the optical power transmitted toward the substrate is amplified. As a result, a high transition rate of the photo-excited carrier was obtained. The plasmon-enhanced antenna shows 1.6-fold increase of peak-to-peak amplitude of the emitted THz wave compared to the photo-conductive antenna without silver nanoislands.

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2010 International Conference on Optical MEMS and Nanophotonics

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