光子晶体陷光型碲镉汞探测器性能提升研究

Investigation on the operation enhancement of HgCdTe photon-trapping detector

光子晶体陷光结构具有类似减反膜的功能,且可以有效降低探测器暗电流,因而在红外探测器领域得到了广泛研究。本文针对光子晶体陷光结构的碲镉汞中波红外探测器,对其性能提升研究进行了论述。利用基于FDTD算法的仿真模型,并通过对结构参数进行优化,使得量子效率提升了近20%。

The photonic crystal can be employed as the antireflection coating due to its photon -trapping ability, and such photonic crystal structure can reduce the dark current, so it is widely investigated in the field of infrared detec- tors. The simulation and design process on HgCdTe medium - wave infrared detector with photon - trapping structure are demonstrated. With the help of FDTD based model,the quantum efficiency has risen by nearly 20% by optimizing the photonic crystal structure.