Thresholds for nonlinear recording of fluorescent centers in chromone-doped polymer films

A. O. Ayt, V. A. Barachevsky, A. Duensing, Ya Yu Fomicheva, S. V. Gagarskiy, H. Iglev, V. V. Kiyko, M. M. Krayushkin, A. N. Sergeev, A. V. Veniaminov, V. V. Zakharov

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6 Scopus citations

Abstract

Nonlinear recording of stable fluorescent microstructures in PMMA films doped with photosensitive compound 2-(furan-2-yl)-3-(thiophen-2-carbonyl)-chromen-4-one is investigated. Energy and power density thresholds for recording stable fluorescent marks and for film destruction and photobleaching of the fluorescent marks by laser pulses were measured in wide spectral (from 530 to 620 nm) and temporal (from 80 to 7 ns) ranges. The evidences of the sequential two-step excitation mechanism for the studied dye are presented. It was shown that picosecond pulse duration range is preferable for two-photon data recording. Quasi-Gaussian and donut shaped fluorescent marks with almost the same cross-section were recorded by femtosecond pulses with rather small difference in energies.

Original languageEnglish
Article number72
JournalOptical and Quantum Electronics
Volume49
Issue number2
DOIs
StatePublished - 1 Feb 2017

Keywords

  • Archive memory
  • Chromone
  • Data recording
  • Fluorescence
  • Photosensitive organic compounds
  • Two-photon excitation

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