Image storage in coumarin-based copolymer thin films by photoinduced dimerization | Zendy

Denis Gindre | Zendy; Konstantinos Iliopoulos | Zendy; Oksana Krupka | Zendy; Emilie Champigny | Zendy; Yohann Morille | Zendy; Marc Sallé | Zendy

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Image storage in coumarin-based copolymer thin films by photoinduced dimerization

Author(s) -

Denis Gindre,

Konstantinos Iliopoulos,

Oksana Krupka,

Emilie Champigny,

Yohann Morille,

Marc Sallé

Publication year - 2013

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.38.004636

Subject(s) - materials science , optics , grayscale , monomer , thin film , dimer , copolymer , 3d optical data storage , photon counting , nonlinear optics , second harmonic generation , optical storage , absorption (acoustics) , optoelectronics , polymer , photon , pixel , nanotechnology , laser , chemistry , physics , organic chemistry , composite material

We report a technique to encode grayscale digital images in thin films composed of copolymers containing coumarins. A nonlinear microscopy setup was implemented and two nonlinear optical processes were used to store and read information. A third-order process (two-photon absorption) was used to photoinduce a controlled dimer-to-monomer ratio within a defined tiny volume in the material, which corresponds to each recorded bit of data. Moreover, a second-order process (second-harmonic generation) was used to read the stored information, which has been found to be highly dependent upon the monomer-to-dimer ratio.

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