High Optical Transmission in a Hybrid Plasmonic-Optical Structure with a Continuous Metal Film

Wang, Zongpeng; Hou, Yaqi

doi:10.1007/s11468-017-0616-z

Cited by 1 publication

(1 citation statement)

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“…Another approach is to employ coupling between plasmon and optical cavity modes. For example, a three-zone structure composed of a top metal grating, SiO 2 spacer, metal film, and silicon substrate was shown to have a transmission of 84% in the near-infrared regime, and was robust under oblique incidence with TM polarization [39]. Other schemes, such as cavity-coupled metal-insulator-metal (MIM) nanohole array structures on quartz substrates, were observed to exhibit a coupling effect between the SPP mode on the metal-insulator interface and the gap SPP in the gap cavity in the near-infrared regime, leading to a linewidth reduction and Q improvement [40].…”

Section: Introductionmentioning

confidence: 99%

Near-Perfect Infrared Transmission Based on Metallic Hole and Disk Coupling Array for Mid-Infrared Refractive Index Sensing

Xu,

Lai,

Meng

et al. 2023

Chemosensors

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Nanostructured color filters, particularly those generated by the extraordinary optical transmission (EOT) resonance of metal–dielectric nanostructures, have been intensively studied over the past few decades. In this work, we propose a hybrid array composed of a hole array and a disk array with the same working period within the 3–14 μm mid-infrared band. Through numerical simulations, near-perfect transmission (more than 99%) and a narrower linewidth at some resonance wavelengths were achieved, which is vital for highly sensitive sensing applications. This superior performance is attributed to the surface plasmon coupling resonance between the hole and disk arrays. A high tunability of the near-perfect transmission peak with varying structural parameters, characteristics of sensitivity to the background refractive index, and angle independence were observed. We expect that this metallic hole and disk coupling array is promising for use in various applications, such as in plasmon biosensors for the high-sensitivity detection of biochemical substances.

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Section: Introductionmentioning

confidence: 99%