A novel scheme of optical readout based on thermo-optical cavity coupled plasmonic scattering for infrared detection
نویسندگان
چکیده
A novel scheme of optical readout based on thermo-optic cavity coupled plasmonic scattering for infrared imaging sensor is proposed to lessen the complex and bulky existed systems using reflective or diffractive schemes. This new readouts thermally-modulated back-scattering visible light signals metallic nanostructures under large-angle dark field illumination. Numerical simulation employed reveal mechanisms large temperature sensitivity low angular scattering, which attributed thermal-optic effects Fabry–Perot (F-P) microcavity with local surface plasmon resonance (LSPR) generated from nanostructures. The feasibility demonstrated by preliminary experiments measurements. Thermal-optic modulated spectra have been obtained 3.39 μm illumination a 0.24 nm/℃ 605 ~ 640 nm band has reached. provides approach develop compact cost systems.
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ژورنال
عنوان ژورنال: Optical and Quantum Electronics
سال: 2022
ISSN: ['1572-817X', '0306-8919']
DOI: https://doi.org/10.1007/s11082-022-03897-0