Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Microsecond All-Optical Modulation by Biofunctionalized Porous Silicon Microcavity

Dániel Petrovszki
,
Sándor Valkai
ORCID logo ,
Lóránd Kelemen
,
László Nagy
ORCID logo ,
Vivechana Agarwal
ORCID logo ,
Szilvia Krekic
,
László Zimányi
* ORCID logo ,
András Dér
* ORCID logo
Version 1 : Received: 20 June 2023 / Approved: 21 June 2023 / Online: 21 June 2023 (07:46:41 CEST)

A peer-reviewed article of this Preprint also exists.

Petrovszki, D.; Valkai, S.; Kelemen, L.; Nagy, L.; Agarwal, V.; Krekic, S.; Zimányi, L.; Dér, A. Microsecond All-Optical Modulation by Biofunctionalized Porous Silicon Microcavity. Nanomaterials 2023, 13, 2070. Petrovszki, D.; Valkai, S.; Kelemen, L.; Nagy, L.; Agarwal, V.; Krekic, S.; Zimányi, L.; Dér, A. Microsecond All-Optical Modulation by Biofunctionalized Porous Silicon Microcavity. Nanomaterials 2023, 13, 2070.

Abstract

We successfully created a composite photonic structure out of porous silicon (PSi) microcavities doped by the photochromic protein, photoactive yellow protein (PYP). Massive incorporation of the protein molecules into the pores was substantiated by a 30-nm shift of the resonance dip upon functionalization, and light-induced reflectance changes of the device due to the protein photocycle were recorded. Model calculations for the photonic properties of the device were consistent with earlier results on the nonlinear optical properties of the protein, whose degree of incorporation into the PSi structure was also estimated. The successful proof-of-concept results are discussed in light of possible practical applications in the future.

Keywords

porous silicon; photoactive yellow protein; photocycle; optical modulation

Subject

Physical Sciences, Applied Physics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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