Narrowband HgCdTe infrared photodetector with integrated plasmonic structure

The application of plasmonic structure has been demon-strated to improve the performance of infrared photode-tectors. However, the successful experimental realization of the incorporation of such optical engineering structure into HgCdTe-based photodetectors has rarely been reported. In this paper, we present a HgCdTe infrared photodetector with integrated plasmonic structure. The experimental results show that the device with plasmonic structure has a dis-tinct narrowband effect with a peak response rate close to 2 A/W, which is nearly 34% higher compared with the ref-erence device. The simulation results are in good agreement with the experiment, and an analysis of the effect of the plas-monic structure is given, demonstrating the crucial role of the plasmonic structure in the enhancement of the device performance.(c) 2023 Optica Publishing Group

Automated summary

This paper presents a HgCdTe infrared photodetector with integrated plasmonic structure. Experimental results show that the device with plasmonic structure exhibits a distinct narrowband effect with a peak response rate close to 2 A/W, which is approximately 34% higher than the reference device. Simulation results agree well with the experiment, and an analysis of the effect of the plasmonic structure confirms its crucial role in enhancing device performance.