Intrinsic and photo-induced properties of high refractive index azobenzene based thin films [Invited]

E. Mavrona, S. Mailis, N. Podoliak, G. D'Alessandro, N. Tabiryan, M. Trapatseli, J. F. Blach, M. Kaczmarek, V. Apostolopoulos

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

We explore the limits of the photosensitive response of thin, 15 to 35 nm, films of complex azobenzene dyes. They show high refractive index, reaching 1.8, and significant photo-induced birefringence. We have successfully recorded strong, birefringent phase gratings with visible light and used the diffraction efficiency measurements to monitor their temporal evolution. The photo-induced gratings in such thin films were found not to be associated with any periodic surface relief, a typical feature in thicker azobenzene layers.

Original languageEnglish
Pages (from-to)420-430
Number of pages11
JournalOptical Materials Express
Volume8
Issue number2
DOIs
Publication statusPublished - 1 Feb 2018
Externally publishedYes

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