Three-dimensional spatial resolution of the nonlinear photoemission from biofunctionalized porous silicon microcavity

M. Martin, G. Palestino, T. Cloitre, V. Agarwal, L. Zimányi, C. Gergely

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10 Citations (Scopus)


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.

Original languageEnglish
Article number223313
JournalApplied Physics Letters
Issue number22
Publication statusPublished - Jun 15 2009


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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