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Proceedings Paper

Multiphoton spectroscopy of polymers for all-optical switching
Author(s): Ayi Bahtiar; Kaloian Koynov; Asmorom Kibrom; Taek Ahn; Christoph Bubeck
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Paper Abstract

We present nonlinear optical spectroscopy of the model conjugated polymer MEH-PPV, a derivative of poly(paraphenylenevinylene) (PPV) and compare it with PPV. We perform multiphoton excited fluorescence spectroscopy and z-scan studies of solutions compared with third-harmonic generation, linear and nonlinear waveguide spectroscopy with intensity dependent prism coupling of thin films in the NIR region. Spectra of the nonlinear absorption coefficient and nonlinear refractive index are used to identify the figures of merit (FOM). We observe a spectral window at 1100 - 1200 nm were the application demands for all-optical waveguide switching are fulfilled. We demonstrate all-optical refractive index changes in the order of 0.001. Control of the molecular weight of MEH-PPVs enables improved film forming properties, reduced birefringence and ultimately low waveguide propagation losses < 1 dB/cm.

Paper Details

Date Published: 14 September 2006
PDF: 14 pages
Proc. SPIE 6330, Nonlinear Optical Transmission and Multiphoton Processes in Organics IV, 63300C (14 September 2006); doi: 10.1117/12.680652
Show Author Affiliations
Ayi Bahtiar, Max Planck Institute for Polymer Research (Germany)
Kaloian Koynov, Max Planck Institute for Polymer Research (Germany)
Asmorom Kibrom, Max Planck Institute for Polymer Research (Germany)
Taek Ahn, Max Planck Institute for Polymer Research (Germany)
Christoph Bubeck, Max Planck Institute for Polymer Research (Germany)


Published in SPIE Proceedings Vol. 6330:
Nonlinear Optical Transmission and Multiphoton Processes in Organics IV
A. Todd Yeates; Kevin D. Belfield; Francois Kajzar, Editor(s)

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