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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 3, Iss. S1 — Aug. 28, 2005
  • pp: S213–S215

Absorptive and refractive nonlinearity of carbon nanotubes grown on Si substrate

Daijian Chen, Peng Liu, Si Xiao, Sha Ding, and Ququan Wang  »View Author Affiliations


Chinese Optics Letters, Vol. 3, Issue S1, pp. S213-S215 (2005)


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Abstract

The third-order susceptibility of multiwalled carbon nanotubes (MWCNTs) grown on Si substrate were measured using reflective Z-scan (RZ-scan) technique with femto-second laser pulses at 790 nm. The nonlinear absorption coefficient 'beta' and nonlinear refraction index 'gamma' were measured to be about 9*10^(2) cm/GW and 9.6*10^(-3) cm2/GW, respectively. This is about one order of magnitude larger than the measurement of MWCNTs on transparent quartz substrate. The enhanced optical nonlinearities are contributed by the enhanced local field and the photoinduced off-resonant absorption of the 'pi'-plamon of MWCNTs on Si.

© 2005 Chinese Optics Letters

OCIS Codes
(190.4400) Nonlinear optics : Nonlinear optics, materials
(240.4350) Optics at surfaces : Nonlinear optics at surfaces
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

Citation
Daijian Chen, Peng Liu, Si Xiao, Sha Ding, and Ququan Wang, "Absorptive and refractive nonlinearity of carbon nanotubes grown on Si substrate," Chin. Opt. Lett. 3, S213-S215 (2005)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-3-S1-S213

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