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Optics Letters

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  • Vol. 36, Iss. 17 — Sep. 1, 2011
  • pp: 3443–3445

Enhancing the linear absorption and tuning the nonlinearity of TiO 2 nanowires through the incorporation of Ag nanoparticles

Kai Zhang, Jiafang Li, Wenzhong Wang, Jinghua Xiao, Wenjing Yin, and Li Yu  »View Author Affiliations


Optics Letters, Vol. 36, Issue 17, pp. 3443-3445 (2011)
http://dx.doi.org/10.1364/OL.36.003443


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Abstract

We report on the enhanced linear absorption and modified nonlinear absorption of TiO 2 nanowires coated with Ag nanoparticles. Experimental results indicated that the coated Ag nanoparticles significantly increased the linear absorption of the nanostructures in the wavelength range of visible light. Z-scan experiments showed that when the excitation energy increased, the nonlinear absorption of the TiO 2 nanowires changed from reverse-saturable absorption to saturable absorption. When Ag nanoparticles were coated on the TiO 2 nanowires, the reverse-saturable absorption was significantly inhibited. The as-prepared nanostructures may find potential applications in the field of solar cells and all-optical switching.

© 2011 Optical Society of America

OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(190.0190) Nonlinear optics : Nonlinear optics
(190.4400) Nonlinear optics : Nonlinear optics, materials
(160.4236) Materials : Nanomaterials

ToC Category:
Materials

History
Original Manuscript: June 20, 2011
Revised Manuscript: August 8, 2011
Manuscript Accepted: August 9, 2011
Published: August 30, 2011

Citation
Kai Zhang, Jiafang Li, Wenzhong Wang, Jinghua Xiao, Wenjing Yin, and Li Yu, "Enhancing the linear absorption and tuning the nonlinearity of TiO2 nanowires through the incorporation of Ag nanoparticles," Opt. Lett. 36, 3443-3445 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-17-3443


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