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8 results on '"Parravicini, J."'

8. Nonlinear Coefficients of Hafnium doped Lithium Niobate Crystals

Author

Paolo Minzioni, Jacopo Parravicini, J. Yu, Vittorio Degiorgio, Luca Tartara, Edvard Kokanyan, Ilaria Cristiani, Cristiani, I, Minzioni, P, Parravicini, J, Yu, J, Tartara, L, Degiorgio, V, and Kokanyan, E

Subjects
Czochralski Method, Materials science, Dopant, business.industry, Doping, Lithium niobate, Physics::Optics, Second-harmonic generation, Photorefractive effect, chemistry.chemical_compound, Lithium Niobate, FIS/01 - FISICA SPERIMENTALE, Optics, chemistry, Condensed Matter::Superconductivity, Picosecond, Optical parametric oscillator, Optoelectronics, Photorefractive, business, Refractive index
Abstract

The study aims to measure the second-order nonlinear coefficient of LiNbO3:Hf crystals as a function of the doping concentration. Second-harmonic generation measurements are performed using picosecond pulses of an optical parametric oscillator. Results show that doping levels significantly affect the wavelength dependence of refractive indices. Crystals with dopant concentration below 3% exhibits a nonlinear efficiency comparable to congruent crystals which shows enhanced resistance to photorefractive damage.

Published
2007

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