Size effects in second harmonic generation from Si(001)-SiO2 interface: microscopic interface effects and optical Casimir nonlocality

A. N. Rubtsov; E. D. Mishina; A. A. Nikulin; Mark H. Anderson; P. T. Wilson; Michael C. Downer; Oleg A. Aktsipetrov

doi:10.1117/12.342358

15 March 1999 Size effects in second harmonic generation from Si(001)-SiO₂ interface: microscopic interface effects and optical Casimir nonlocality

A. N. Rubtsov, E. D. Mishina, A. A. Nikulin, Mark H. Anderson, P. T. Wilson, Michael C. Downer, Oleg A. Aktsipetrov

Author Affiliations +

Proceedings Volume 3734, ICONO '98: Fundamental Aspects of Laser-Matter Interaction and New Nonlinear Optical Materials and Physics of Low-Dimensional Structures; (1999) https://doi.org/10.1117/12.342358
Event: ICONO '98: Laser Spectroscopy and Optical Diagnostics: Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine, 1998, Moscow, Russian Federation

Abstract

Size effects in optical second harmonic generation (SHG) from Si(001)-SiO₂ planar micro-cavity structures are studied for fundamental wavelengths from 700 nm to 850 nm. The observed dependence of SHG intensity on the thickness of oxide layer is explained, in part, by an optical Casimir nonlocality arising from interference of zero-point fluctuations in micro-cavity, which is distinguished from microscopic interface effects. Detailed theoretical analysis of the Casimir nonlocal contribution to the quadratic susceptibility using a diagrammatic technique is performed for visible and IR regions. The difference in the length scale of the Casimir contribution at 800 nm and 1064 nm fundamental wavelength is discussed.

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A. N. Rubtsov, E. D. Mishina, A. A. Nikulin, Mark H. Anderson, P. T. Wilson, Michael C. Downer, and Oleg A. Aktsipetrov "Size effects in second harmonic generation from Si(001)-SiO₂ interface: microscopic interface effects and optical Casimir nonlocality", Proc. SPIE 3734, ICONO '98: Fundamental Aspects of Laser-Matter Interaction and New Nonlinear Optical Materials and Physics of Low-Dimensional Structures, (15 March 1999); https://doi.org/10.1117/12.342358

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