Paper
25 September 2008 Nonlinear refraction of gold island films
A. Borshch, M. Brodyn, R. Fedorovych, V. Liakhovetskyi, V. Volkov
Author Affiliations +
Abstract
Giant nonlinear refraction has been experimentally observed in gold island films. The complex third-order nonlinear susceptibility χ(3)(ω;ω,-ω,ω) reaches a value of -8×10-5 esu (λ = 532 nm, ι = 10 ns) and (+5×10-7 + i0.3×10-7) esu (λ = 800 nm, ι = 85 fs). The mechanism of nonlinearity of the refractive index can be associated with the resonance enhancement of the factor of the local optical field at the pump wavelength due to the excitation of surface plasmons, as well as with the contribution of the heating of conduction electrons in an ensemble of metal particles.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. Borshch, M. Brodyn, R. Fedorovych, V. Liakhovetskyi, and V. Volkov "Nonlinear refraction of gold island films", Proc. SPIE 7101, Advances in Optical Thin Films III, 71011S (25 September 2008); https://doi.org/10.1117/12.797677
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Gold

Metals

Nonlinear optics

Electrons

Refraction

Particles

Surface plasmons

Back to Top