Showing papers by "Marco Bazzan published in 2003"
TL;DR: In this paper, a correlation between the crystal structure and the refractive index profiles has been experimentally determined that allows to explain specific peculiarities of the optical properties observed, as well as to predict the characteristics of a variety of waveguides.
Abstract: We show that MgO:HxLi1−xNbO3 single crystalline solid solutions prepared by proton exchange exhibit very complex structural chemistry which is different from that for undoped congruent material. A correlation between the crystal structure and the refractive index profiles has been experimentally determined that allows us to explain specific peculiarities of the optical properties observed, as well as to predict the characteristics of a variety of waveguides. We have established that the well-known annealing proton exchange process leads to crystal structure disorder in MgO:LiNbO3 within the surface region of waveguides fabricated this way, but the soft proton exchange process preserves the crystal structure of magnesium-doped material.
12 citations
TL;DR: In this article, a topographic investigation of periodically poled lithium niobate (PPLN) crystals was performed by recording a map of the crystal surface after a selective etching process using a standard profilometer.
9 citations
TL;DR: In this article, a systematic study on the role of each growth parameter in the PPLN period and the modification of the domain width across the crystal due to the growth process is presented.
6 citations
TL;DR: In this article, LiNibate niobate crystals doped with erbium by the ion exchange process were studied by means of extended X-ray absorption fine structure spectroscopy and secondary ion mass spectrometry.
Abstract: Lithium niobate crystals doped with erbium by the ion exchange process were studied by means of extended X-ray absorption fine structure spectroscopy and secondary ion mass spectrometry. The study of the local atomic order allowed the determination of the erbium environment in the crystal matrix and the investigation on the role of preparation conditions.
6 citations