Controlled thermal emission of polarized infrared waves from arrayed plasmon nanocavities
Controlled thermal emission of polarized infrared waves from arrayed plasmon nanocavities
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DOI：
10.1063/1.2834903
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发表时间：
2008-01-14
影响因子：
4
通讯作者：
Kitagawa, S.
中科院分区：
文献类型：
--
作者：
Ikeda, K.;Miyazaki, H. T.;Kitagawa, S.
我们已经证明了在金表面上雕刻的窄深矩形腔的亚波长光栅的线极化和窄带中红外波的热发射。100纳米宽和1000纳米深的高向沟槽通过母模的反演精确制造。腔内表面等离子体的风琴管共振呈现出以2.5 ~ 5.5 μ m为中心的洛伦兹发射峰，最大发射度达到0.90，峰宽δ λ / λ窄至0.13 ~ 0.23。这种简单的发射器有望在分析我们的环境的红外传感技术中发挥关键作用。
We have demonstrated thermal emission of linearly polarized and narrow-band midinfrared waves from subwavelength gratings of narrow and deep rectangular cavities engraved on a Au surface. 100-nm-wide and 1000-nm-deep, high-aspect trenches were accurately manufactured by inversion from master molds. Organ pipe resonance of surface plasmons in the cavities exhibits a Lorentzian emission peak centered at 2.5-5.5 mu m. The maximum emittance reaches 0.90 and the peak width Delta lambda/lambda is as narrow as 0.13-0.23. This simple emitter is expected to play a key role in the infrared sensing technologies for analyzing our environment.