Spectral dependence of nonlinear absorption and refraction in terthiophene-based organic semiconductors

Leszek Mazur, Radoslaw Kolkowski, Katarzyna Matczyszyn, Fabrice Mathevet, Patrice Rannou, Andre Jean Attias, Marek Samoc

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We present results related to the determination of third-order nonlinear optical (NLO) properties of three organic semiconductors (OSCs) with a π-conjugated terthiophene (3Th) core and symmetrically or asymmetrically end-capped with specific terminals. The spectral dependences of the real and imaginary part of the cubic hyperpolarizability γ were obtained from Z-scan studies in the 600-1200 nm range. The 3Th-based OSCs show only moderate nonlinear absorption at twice the wavelength of the main one-photon absorption peaks (∼750 nm) but appreciable two-photon absorption cross sections (σ2 ≈ 120 GM) close to 600 nm.

Original languageEnglish
Pages (from-to)1682-1685
Number of pages4
JournalOptical Materials
Volume34
Issue number10
DOIs
Publication statusPublished - Aug 2012

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering

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