"Artificial" chirality induced in doped polymer by irradiation with circularly polarized excimer laser light

Y. Kalachyova, O. Lyutakov, I. Goncharova, V. Svorcik

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Creation of artificial optical response, which is determined by the materials geometry rather than chemical composition, is one of the main challenges of modern physics. In this paper application of large-area chiral excimer laser patterning for the creation of artificial chirality is described. Polymethylmethacrylate was doped with chromophore (Fast Red ITR) and this film was irradiated with circularly polarized KrF excimer laser beam. Surface morphology of pristine and treated samples was studied by confocaland AFM microscopy, absorption was studied by FTIR and VCD spectroscopies. It was initially proposed, that surface structure induced by rotationally polarized laser beam will have chiral nature and response. Actual experiments indicate that circularly polarized light induces the formation of many microscopic spirals or more complex structures on the polymer surface. Shape and density of the surface structures were determined by experimental conditions and in all cases the initially nonchiral doped PMMA becomes equivalent to the classical, optically active media. In particular, created structures gave rise to a photoinduced circular dichroism response, with the response being determined by experimental conditions. The resulting chiral structures show long-time stability and offer interesting possibility to manipulate the light polarization.

Original languageEnglish
Pages (from-to)2761-2767
Number of pages7
JournalOptical Materials Express
Volume5
Issue number12
DOIs
Publication statusPublished - 1 Jan 2015
Externally publishedYes

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Chirality
Excimer lasers
Polymethyl Methacrylate
Light polarization
Surface structure
Laser beams
Polymers
Irradiation
Dichroism
Chromophores
Surface morphology
Microscopic examination
Physics
Spectroscopy
Geometry
Chemical analysis
Experiments

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

"Artificial" chirality induced in doped polymer by irradiation with circularly polarized excimer laser light. / Kalachyova, Y.; Lyutakov, O.; Goncharova, I.; Svorcik, V.

In: Optical Materials Express, Vol. 5, No. 12, 01.01.2015, p. 2761-2767.

Research output: Contribution to journalArticle

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