A MEMS-based quad-wavelength hybrid plasmonic-pyroelectric infrared detector

18Citations
Citations of this article
30Readers
Mendeley users who have this article in their library.

Abstract

Spectrally selective detection is of crucial importance for diverse modern spectroscopic applications such as multi-wavelength pyrometry, non-dispersive infrared gas sensing, biomedical analysis, flame detection, and thermal imaging. This paper reports a quad-wavelength hybrid plasmonic-pyroelectric detector that exhibited spectrally selective infrared detection at four wavelengths-3.3, 3.7, 4.1, and 4.5 μm. The narrowband detection was achieved by coupling the incident infrared light to the resonant modes of the four different plasmonic perfect absorbers based on Al-disk-array placed on a Al2O3-Al bilayer. These absorbers were directly integrated on top of a zinc oxide thin film functioning as a pyroelectric transducer. The device was fabricated using micro-electromechanical system (MEMS) technology to optimize the spectral responsivity. The proposed detector operated at room temperature and exhibited a responsivity of approximately 100-140mV/Wwith a full width at half maximum of about 0.9-1.2 μm. The wavelength tunability, high spectral resolution, compactness and robust MEMS-based platform of the hybrid device demonstrated a great advantage over conventional photodetectors with bandpass filters, and exhibited impressive possibilities for miniature multi-wavelength spectroscopic devices.

Cite

CITATION STYLE

APA

Doan, A. T., Yokoyama, T., Dao, T. D., Ishii, S., Ohi, A., Nabatame, T., … Nagao, T. (2019). A MEMS-based quad-wavelength hybrid plasmonic-pyroelectric infrared detector. Micromachines, 10(6). https://doi.org/10.3390/mi10060413

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free