Nonlinear refractive index and three-photon absorption coefficient of poly(9,9-dioctylfluorence)

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Date
2009
Authors
Jang, J. I.
Mani, S.
Ketterson, J. B.
Lovera, Pierre
Redmond, Gareth
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AIP Publishing
Published Version
10.1063/1.3269588
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Abstract
We investigate the optical Kerr effect and third harmonic generation (THG) arising from chi((3)) of poly(9,9-dioctylfluorence), which is an emerging organic pi-conjugated polymer from the perspective of diverse optoelectronic applications. The measured nonlinear refractive index, obtained with closed-aperture Z-scan, is n(2)=(2.04 +/- 0.10)x10(-12) esu at lambda=1540 nm. Open-aperture Z-scan yields the three-photon absorption coefficient of gamma=(1.88 +/- 0.26)x10(-3) cm(3)/GW(2) at lambda=1064 nm, arising from chi((5)) response. The wavelength-dependent THG indicates that this semiconducting polymer can be a potentially useful polymer system for nonlinear-optics applications involving high-order optical processes in the mid-IR range. (C) 2009 American Institute of Physics. (doi:10.1063/1.3269588)
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Keywords
Liquid-crystalline polyfluorene , Optical nonlinearities , Mobility enhancement , Photoluminescence , Alignment , Diodes , Phase , Absorption coefficients , Conducting polymers , Optical harmonic generation , Optical Kerr effect , Organic semiconductors , Refractive index , Polymers , Optical polymers , Optical parametric amplifiers
Citation
Jang, J. I., Mani, S., Ketterson, J. B., Lovera, P. and Redmond, G. (2009) 'Nonlinear refractive index and three-photon absorption coefficient of poly(9,9-dioctylfluorence)', Applied Physics Letters, 95(22), pp. 221906. doi: 10.1063/1.3269588
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http://aip.scitation.org/doi/abs/10.1063/1.3269588
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https://hdl.handle.net/10468/4349
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Tyndall National Institute - Journal Articles
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© 2009 American Institute of Physics.This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Jang, J. I., Mani, S., Ketterson, J. B., Lovera, P. and Redmond, G. (2009) 'Nonlinear refractive index and three-photon absorption coefficient of poly(9,9-dioctylfluorence)', Applied Physics Letters, 95(22), pp. 221906 and may be found at http://aip.scitation.org/doi/abs/10.1063/1.3269588