Comparison of two complementary surface plasmonic structures and their enhancement in infrared photodetectors

Guiru Gu; Xuejun Lu

doi:10.1117/12.2050658

24 June 2014 Comparison of two complementary surface plasmonic structures and their enhancement in infrared photodetectors

Guiru Gu, Xuejun Lu

Author Affiliations +

Proceedings Volume 9070, Infrared Technology and Applications XL; 907038 (2014) https://doi.org/10.1117/12.2050658
Event: SPIE Defense + Security, 2014, Baltimore, MD, United States

Abstract

The Surface Plasmonic Resonances (SPRs) excited by two complementary Plasmonic structures, 2 dimensional metallic disc array (2DMDA) and subwavlength hole array (2DSHA), are simulated and analyzed. The 2DMDA and 2DSHA enhancement on quantum dot infrared photodetectors (QDIPs) are also evaluated and compared. The 2DSHA give a large peak photocurrent enhancement about 40 times, whereas the 2DMDA provide 10 times with broad band enhancement. The cause of the difference in enhancement is analyzed. It’s indicated that the QDIP enhancement depends on the interaction of the plasmonic fields with the quantum dots (QDs). Based on the experimental and simulations results, suggestions are provided for future improving the device enhancement. The results reported in this paper consolidate our efforts in bringing the innovative view of plasmonic research through two complementary plasmonic structures.

Citation Download Citation

Guiru Gu and Xuejun Lu "Comparison of two complementary surface plasmonic structures and their enhancement in infrared photodetectors", Proc. SPIE 9070, Infrared Technology and Applications XL, 907038 (24 June 2014); https://doi.org/10.1117/12.2050658

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