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Design of near-infrared dyes for nonlinear optics: Towards optical limiting applications at telecommunication wavelengths
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2009 (English)In: Optical Materials in Defence Systems Technology VI, SPIE - International Society for Optical Engineering, 2009, 74870G- p.Conference paper (Refereed)
Abstract [en]

The rapid development of frequency-tunable pulsed lasers up to telecommunication wavelengths (1400-1600 nm) led to the design of new materials for nonlinear absorption in this spectral range. In this context, two families of near infra-red (NIR) chromophores, namely heptamethine cyanine and aza-borondipyrromethene (aza-bodipy) dyes were studied. In both cases, they show significant two-photon absorption (TPA) cross-sections in the 1400-1600 nm spectral range and display good optical power limiting (OPL) properties. OPL curves were interpreted on the basis of TPA followed by excited state absorption (ESA) phenomena. Finally these systems have several relevant properties like nonlinear absorption properties, gram scale synthesis and high solubility. In addition, they could be functionalized on several sites which open the way to numerous practical applications in biology, solid-state optical limiting and signal processing.

Place, publisher, year, edition, pages
SPIE - International Society for Optical Engineering, 2009. 74870G- p.
, Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X ; 7487
Keyword [en]
Aza-bodipy, Cyanine, Excited state absorption, Nonlinear absorption, Optical power limiting, Telecommunication wavelength, Two-photon absorption
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URN: urn:nbn:se:kth:diva-153524DOI: 10.1117/12.831226ScopusID: 2-s2.0-70449629651ISBN: 978-081947793-4OAI: diva2:753515
Optical Materials in Defence Systems Technology VI, 31 August 2009 through 1 September 2009, Berlin, Germany

QC 20141008

Available from: 2014-10-08 Created: 2014-10-06 Last updated: 2014-10-08Bibliographically approved

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Malmström, Eva
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Fibre and Polymer Technology
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