Giant optical nonlinearities of fractal colloid aggregates

Robert L. Armstrong; Vladimir P. Safonov; Nikolay N. Lepeshkin; Won-Tae Kim; Vladimir M. Shalaev

doi:10.1117/12.279300

10 October 1997 Giant optical nonlinearities of fractal colloid aggregates

Robert L. Armstrong, Vladimir P. Safonov, Nikolay N. Lepeshkin, Won-Tae Kim, Vladimir M. Shalaev

Proceedings Volume 3146, Nonlinear Optical Liquids and Power Limiters; (1997) https://doi.org/10.1117/12.279300
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Strong fluctuations oflocal fields may result in huge enhancements ofoptical nonlinearities in metal fractal colloid aggregates. Giant enhancement ofthird order nonlinearities was calculated and obtained experimentally. The real and imaginary parts of the cubic susceptibility of silver colloid aggregates were measured. It was found that the coefficient of nonlinear absorption depends on laser wavelength and intensity strongly. An optical limiting in silver colloid was observed.

Citation Download Citation

Robert L. Armstrong, Vladimir P. Safonov, Nikolay N. Lepeshkin, Won-Tae Kim, and Vladimir M. Shalaev "Giant optical nonlinearities of fractal colloid aggregates", Proc. SPIE 3146, Nonlinear Optical Liquids and Power Limiters, (10 October 1997); https://doi.org/10.1117/12.279300

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