Structural and 3rd order nonlinear optical properties of organic dyes immobilized silica nano-composite
Source abstract
Abstract
Abstract Low-temperature sol-gel route is used to synthesized the silica and three different organic dyes i.e., phenol red (PR), creosol red (CR) and bromophenol blue (BPB) individually encapsulated within silica nano-composite matrix. FTIR analysis shows heterogeneous bonding between silica and dye species. The PR encapsulated silica (PR-Si) nano-composite matrix exhibited average surface roughness (Ra) ~ 1.6 nm than other matrices, which is advantageous for non-linear behaviour. FESEM/EDX analysis confirmed the crack-free, porous structures of successfully dyes encapsulated silica nano-composite matrix. The closed z-scan characterization of PR-Si, CR-Si, and BPB-Si shows self-defocusing phenomena with the negative nonlinear refractive index. From the open z-scan measurement, the strength of nonlinear absorption (NLA) is observed in the order of PR-Si > CR-Si > BPB-Si nano-composite matrix. Smooth surface and low surface roughness of the PR-Si causes strong nonlinear character during the interaction with the excitation beam. The prominent NLO response of the PR-Si nano-composite matrix has provided a new avenue in the development of NLO devices especially all-optical control as well as optical switching.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nonlinear Optical Materials Studies · Nonlinear Optical Materials Research · Porphyrin and Phthalocyanine Chemistry
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
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