Large pure refractive nonlinearity of nanostructure silica aerogel

Seo, J. T.; Yang, Q.; Creekmore, S.; Tabibi, B.; Temple, D.; Kim, S. Y.; Yoo, K.; Mott, A.; Namkung, M.; Jung, S. S.
June 2003
Applied Physics Letters;6/23/2003, Vol. 82 Issue 25, p4444
Academic Journal
The nonlinear refraction coefficient of silica aerogel was estimated to be ∼-1.5 × 10[SUP-15]m[SUP2]/W (∼-3.67 × 10[SUP-9] esu) with a signal-beam z-scan spectroscopy. The third-order nonlinear refraction coefficient of nanostructure silica aerogel was almost five orders larger than the nonlinear refraction (χ[SUP3]) of bulk material. The large nonlinear refraction with high nonlinear figure of merit is an ideal optical property for nonlinear optical applications.


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