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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry van Driel
  • Vol. 29, Iss. 4 — Apr. 1, 2012
  • pp: 669–675

Optical nonlinearity of silver-decorated graphene

Basanth S. Kalanoor, Prem B. Bisht, S. Akbar Ali, Tessy T. Baby, and S. Ramaprabhu  »View Author Affiliations

JOSA B, Vol. 29, Issue 4, pp. 669-675 (2012)

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The nonlinear optical properties of silver-nanoparticle-decorated functionalized (hydrogen-induced reduction, exfoliated) multilayered graphene (AgNP/fG) composite have been investigated in the picosecond time scale by using the Z-scan technique. Drastic changes in the Z-scan profiles are obtained in AgNP/fG at 1064 nm as the profile flips from the behavior of strong saturable absorption (SA) to reverse saturable absorption (RSA) on increasing the incident intensity. On the other hand, in graphene, the effect of weaker SA is observed at low intensities, but it flips to RSA at higher incident intensities. The strong SA in the case of the composite has been attributed to the electronic interaction between graphene and silver nanoparticles. The metallic plasmonic transition has a contribution to the optical nonlinearity in AgNP/fG at 532 nm.

© 2012 Optical Society of America

OCIS Codes
(190.4180) Nonlinear optics : Multiphoton processes
(320.5390) Ultrafast optics : Picosecond phenomena

ToC Category:
Ultrafast Optics

Original Manuscript: July 14, 2011
Revised Manuscript: December 2, 2011
Manuscript Accepted: December 6, 2011
Published: March 16, 2012

Basanth S. Kalanoor, Prem B. Bisht, S. Akbar Ali, Tessy T. Baby, and S. Ramaprabhu, "Optical nonlinearity of silver-decorated graphene," J. Opt. Soc. Am. B 29, 669-675 (2012)

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