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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 3 — Feb. 1, 2009
  • pp: 307–309

Optical nonlinearities of Au nanoparticles and Au Ag coreshells

Jae Tae Seo, Qiguang Yang, Wan-Joong Kim, Jinhwa Heo, Seong-Min Ma, Jasmine Austin, Wan Soo Yun, Sung Soo Jung, Sang Woo Han, Bagher Tabibi, and Doyle Temple  »View Author Affiliations


Optics Letters, Vol. 34, Issue 3, pp. 307-309 (2009)
http://dx.doi.org/10.1364/OL.34.000307


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Abstract

Au nanoparticles exhibited both negative and positive nonlinear absorptions with ground-state plasmon bleaching and free-carrier absorption that could be origins of the saturable and reverse-saturable optical properties. Au Ag coreshells displayed only positive nonlinear absorption and reverse-saturable optical properties as a function of excitation intensity at the edge of surface-plasmon resonance, which implies no ground-state plasmon bleaching and the existence of two-photon absorption.

© 2009 Optical Society of America

OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(190.4400) Nonlinear optics : Nonlinear optics, materials
(240.6680) Optics at surfaces : Surface plasmons
(160.4236) Materials : Nanomaterials

ToC Category:
Materials

History
Original Manuscript: September 29, 2008
Revised Manuscript: November 27, 2008
Manuscript Accepted: November 28, 2008
Published: January 26, 2009

Citation
Jae Tae Seo, Qiguang Yang, Wan-Joong Kim, Jinhwa Heo, Seong-Min Ma, Jasmine Austin, Wan Soo Yun, Sung Soo Jung, Sang Woo Han, Bagher Tabibi, and Doyle Temple, "Optical nonlinearities of Au nanoparticles and Au/Ag coreshells," Opt. Lett. 34, 307-309 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-3-307


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