Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3148698
Keywords
fluorescence; laser cavity resonators; microcavities; nonlinear optics; optical harmonic generation; optical microscopy; optimisation; photoemission; porous semiconductors; silicon
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Funding
- Languedoc-Roussillon Region
- OTKA [T049207]
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Infiltration of biomacromolecules into porous silicon photonic architectures results in biofunctionalized structures with unique properties. Characterization of their optical response and performance optimization in biomacromolecular detection and biophotonic application require a combination of optical and structural studies. Nonlinear optical microscopy is applied to study porous silicon microcavities with and without infiltrated glucose oxidase. The infiltrated protein acts as an internal two-photon-excited fluorescence emitter and second harmonic generator, enabling the in-depth visualization of the porous structure. Enhanced second harmonic generation and fluorescence emission by the porous silicon structure is experimentally associated with the defect layer.
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