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Optics Letters

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  • Vol. 28, Iss. 19 — Oct. 1, 2003
  • pp: 1790–1792

Optical nonlinearity of nanocrystalline Au/ZnO composite films

Hongbo Liao, Weijia Wen, George K. L. Wong, and Guozhen Yang  »View Author Affiliations


Optics Letters, Vol. 28, Issue 19, pp. 1790-1792 (2003)
http://dx.doi.org/10.1364/OL.28.001790


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Abstract

The third-order nonlinear optical susceptibilities, χ(3) , of composite films consisting of nanocrystalline Au and ZnO particles were investigated by use of a degenerate four-wave mixing scheme. The maximum value of χ(3) , measured at a laser wavelength of 532 nm and a pulse duration of 70 ps, was ~2×10-6esu . Also, this χ(3) value was achieved with small absorption (the surface-plasmon peak was at the 615-nm wavelength). Our composite materials showed no discernible degradation after they were subjected to irradiation for a total of 3×107 high-intensity pulses (24 Mw/cm 2 , 70-ps pulse duration at 500 Hz) during 16 h of testing.

© 2003 Optical Society of America

OCIS Codes
(160.4330) Materials : Nonlinear optical materials
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(320.5390) Ultrafast optics : Picosecond phenomena

Citation
Hongbo Liao, Weijia Wen, George K. L. Wong, and Guozhen Yang, "Optical nonlinearity of nanocrystalline Au/ZnO composite films," Opt. Lett. 28, 1790-1792 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-19-1790


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