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Nonlinear refractive index and three-photon absorption coefficient of poly(9,9-dioctylfluorence)
Jang, J. I.; Mani, S.; Ketterson, J. B.; Lovera, Pierre; Redmond, Gareth
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)
Keyword(s): 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
Publication Date:
Type: Journal article
Peer-Reviewed: Yes
Language(s): English
Institution: University College Cork
Citation(s): 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
Publisher(s): AIP Publishing
File Format(s): application/pdf
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First Indexed: 2017-09-06 06:39:30 Last Updated: 2017-09-06 06:39:30