Circumferences Lead to Enhancements of Nonresonant Third-Order Susceptibilities for Carbon Nanotube Bundles

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Abstract:

Nonresonant enhancements of third-order susceptibility χ(3)(-ω; ω, ω, -ω) have been investigated for zigzag carbon nanotube (n,0) bundles (n = 5, 7, 11, 13, 8, 10, 14, 16) based on the energy band theory combined with the classic anharmonic oscillator model. The obtained results show that the (3) values increase as circumference of tube varies in the order of 5<7<11<13 and 8<10<14<16 for (n,0) tube bundles, respectively. The origination of the large third-order susceptibility is ascribed to the circumference effect of individual tube. The nonresonant third-order susceptibility is estimated to be about 10-6 esu in the axial direction of (16,0) tube bundles, and it is possible for a good candidate to make optical phase conjugate device.

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Periodical:

Advanced Materials Research (Volumes 415-417)

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1200-1203

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December 2011

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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