Distributed feedback grating fabricated from hybrid polymer precursor gel by employing short‐pulse laser interference for photopumped polymer laser applications

Hidayat, Rahmat; Hidayat, Sahrul; Fitrilawati, Fitrilawati; Herman,; Tjia, May On; Fujii, Akihiko

doi:10.1002/pat.2039

Cited by 5 publications

(1 citation statement)

References 26 publications

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“…The structure formed a 1D dielectric (polymer) surface-relief grating covered by a gold (Au) nanolayer. The polymer precursor used in the present work was prepared from 3-trimethoxysilyl propyl methacrylate (TMSPMA) via the sol–gel route, as reported elsewhere 36 . Figure 1 b schematically shows the typical preparation process of these polymer grating structures using nanoimprint photocuring lithography.…”

Section: Methodsmentioning

confidence: 99%

Dual plasmonic modes in the visible light region in rectangular wave-shaped surface relief plasmonic gratings

Hidayat

Pradana

Fariz

et al. 2023

Sci Rep

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Rectangular wave-shaped surface-relief plasmonic gratings (RSR-PGs) have been fabricated from a hybrid polymer by employing a simple nanoimprint photocuring lithography technique using a silicon template, followed by gold nanolayer metallization on top of the formed replica structure. By forming a one-dimensional (1D) plasmonic grating with a periodicity of approximately 700 nm, a reflectance spectral dip was experimentally observed in the visible light region, from 600 to 700 nm, with increasing incident angle from 45° to 60°. This dip can be associated with surface plasmon resonance (SPR) wave excitation, which is coupled with the diffraction order m = − 2. The calculations of reflectance spectra simulation using the rigorous coupled wave analysis (RCWA) method have also been carried out, resulting in the appearance of an SPR dip in the range of 600–700 nm, for incident angles in the range of 45°–65°, which agrees with the experimental results. Interestingly, these RSR-PGs show richer plasmon characteristics than the sine-wave-shaped plasmonic gratings. The experimental and spectral simulation results revealed two different plasmonic excitation modes: long-range SPR and quasi-localized SPR (LSPR). While the long-range SPR was formed above the ridge sections along the grating structure surface, the quasi-localized SPR was locally formed inside the groove. In addition, for RSR-PGs with a narrow groove section, the long-range SPR seems to be coupled with the periodic structure of the grating, resulting in the appearance of plasmonic lattice surface resonance (LSR) that is indicated by a narrower plasmon resonance dip. These characteristics are quite different from those found in the sine wave-shaped plasmonic gratings. The present results may thus provide better insights for understanding the plasmon excitations in this type of rectangular plasmonic grating and might be useful for designing their structure for certain practical applications.

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Section: Methodsmentioning

confidence: 99%