Non-resonant enhancement of spontaneous emission of HITC dye in metal-insulator-metal waveguides
Non-resonant enhancement of spontaneous emission of HITC dye in metal-insulator-metal waveguides
复制标题
金属-绝缘体-金属波导中HITC染料自发发射的非共振增强
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
M. Noginov
中科院分区：
文献类型：
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作者：
S. Prayakarao;D. Miller;D. Courtwright;C. Bonner;M. Noginov
实验研究了HITC激光染料在金属-绝缘体-金属(MIM)光波导(也称为法布里-珀罗腔)中自发辐射的非共振增强。我们发现，在尺寸太小而不能支持基波或任何高阶共振的腔中，随着腔尺寸的减小，发射衰减率增加了近一个数量级。同时，当腔体尺寸从∼2 0 0减小到∼30 nm时，发射强度增加，当腔体尺寸小于∼30 nm时，发射强度急剧下降。这种发射增强与发射偶极子相对于反射镜的垂直方向一致，与文献中已知的理论预测很好地一致。
We have experimentally studied the non-resonant enhancement of spontaneous emission of HITC laser dye in metal-insulator-metal (MIM) waveguides (also referred to as Fabry–Perot cavities). We have found that in the cavities, whose size was too small to support a fundamental or any higher order resonance, the emission decay rate increased, by nearly an order of magnitude, with reduction of the cavity size. At the same time, the emission intensity increased when the cavity size was reduced from ∼200 to ∼30 nm and dropped sharply when the cavity was smaller than ∼30 nm. This emission enhancement, consistent with the perpendicular orientation of the emitting dipole with respect to the mirrors, is in a good agreement with the theoretical predictions known from the literature.