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On-chip integration solutions of compact optics and detectors in room-temperature terahertz imaging systems

机译:室温太赫兹成像系统中紧凑型光学器件和探测器的片上集成解决方案

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On-chip integrated solutions employing properties of Fresnel zone plates with integrated band-pass filters for the room temperature terahertz imaging systems are discussed. Finite-difference time-domain simulations were used to predict properties of conventional zone plates and ones with resonant filter areas as flat optics components. They are produced employing the laser direct writing and characterized by electronic THz sources and an optically pumped terahertz laser. It was shown that more than one order of magnitude detection enhancement can be observed of bow-tie-shaped InGaAs-based terahertz detectors by on-chip incorporation of the secondary diffractive optics.
机译:讨论了在室温太赫兹成像系统中采用带集成带通滤波器的菲涅耳波带片特性的片上集成解决方案。时域有限差分模拟用于预测常规波带片的特性,以及将谐振滤光片面积用作平面光学元件的波带片的特性。它们是采用激光直接写入技术生产的,并具有电子太赫兹源和光泵浦太赫兹激光器的特征。结果表明,通过在芯片上集成次级衍射光学器件,可以观察到蝴蝶结形的基于InGaAs的太赫兹检测器的检测强度提高了一个以上的数量级。

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