arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1609.04850physics.optics
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优化等离子体结构集成单光子探测器以最大化偏振对比度

Plasmonic structure integrated single-photon detectors optimized to maximize polarization contrast

M. Csete, A. Szenes, D. Maraczi, B. Banhelyi, T. Csendes, G. Szabo

摘要:

利用COMSOL Multiphysics软件对超导纳米线单光子探测器(SNSPD)的偏振对比度进行了数值优化。SNSPD集成了四种不同类型的一维周期性等离子体结构,能够介导p-偏振光子选择性的氮化铝超导纳米线图案。优化与两个不同的标准有关的最大倾斜导致波长缩放的周期性集成结构,具有不同的几何参数,并表现出不同的极角依赖的光学响应和色散特性,以及伴随的近场现象的极值。在纳米腔、纳米腔偏转器、纳米腔双偏转器中,偏振对比度分别为6.37*10^2、3.28*10^2 - 6.86*10^11、1.42*10^11 - 1.81*10^13、7.87*10^12 - 1.90*10^3和1.15*10^5,纳米腔-沟槽-阵列-集成的P-SNSPD,其关于最大倾斜用85度和80度标准优化。

英文摘要:

Numerical optimization was performed via COMSOL Multiphysics to maximize the polarization contrast of superconducting nanowire single photon detectors (SNSPDs). SNSPDs were integrated with four different types of one-dimensional periodic plasmonic structures capable of mediating p-polarized photon selectivity to the niobium-nitride superconducting nanowire pattern. Optimization with two different criteria regarding the maximal tilting resulted in wavelength-scaled periodic integrated structures, which have different geometrical parameters, and exhibit different polar angle dependent optical response and dispersion characteristics, as well as accompanying near-field phenomena at the extrema. Polarization contrast of 6.37*10^2 and 3.28*10^2 - 6.86*10^11 and 1.42*10^11 - 1.81*10^13 and 7.87*10^12 - 1.90*10^3 and 1.15*10^5 can be achieved in nanocavity-, nanocavity-deflector-, nanocavity-double-deflector-, nanocavity-trench-array-integrated P-SNSPDs optimized with 85 degree and 80 degree criterion regarding the maximal tilting.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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