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Third order nonlinear optical response of TTF-based molecular corners

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)205-212
Number of pages8
JournalNonlinear Optics, Quantum Optics
Volume43
Issue number1-4
Publication statusPublished - 2012
Publication typeA1 Journal article-refereed

Abstract

Comparative study of the nonlinear optical response of pyrrolo- tetrathiafulvalene polygons has been carried out. These materials are of great importance for photonics, because they can be used as building blocks for more complicated molecular systems like rotaxanes, catenanes which are promising candidates for opto-electronic applications like optical computing, optical switching etc. During this work the third order nonlinear susceptibility (X (3)) has been determined by the Degenerate Four Wave Mixing experiment, while the imaginary part of the X (3), which is related with the nonlinear absorption was determined by "open-aperture" Z-scan measurements. Moreover measurements have been carried out in order to provide information about the optical limiting efficiency of the materials. High X (3) has been found reaching 2.30 × 10 -21 m 2/V 2, corresponding to second order hyperpolarizability γ values of about 6.5 × 10 -45 m 5/V 2.

Keywords

  • Degenerate four wave mixing (DFWM), Nonlinear optical response, TTF derivatives, Z-scan