Raman Investigation of Fe in--Diffused Photorefractive Waveguides on Lithium Niobate Substrates

Raman Investigation of Fe in--Diffused Photorefractive Waveguides on Lithium Niobate Substrates

Fe in--diffusion was performed by depositing a Fe film on X-cut LN substrates by sputtering and subsequent annealing in a controlled atmosphere. The photorefractive properties of the Fe:LN film were studied by confocal Micro-Raman spectroscopy. The presence of unexpected lines in the Raman spectra o...

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Bibliographic Details
Published in:Ferroelectrics Vol. 390; no. 1; p. 1
Main Authors: Mignoni, S, Fontana, M D, Bourson, P, Ciampolillo, M V, Bazzan, M, Argiolas, N, Sada, C
Format: Journal Article
Language:English
Published: Philadelphia Taylor & Francis Ltd 01-10-2009
Subjects:
Annealing
Crystallography
Lithium
Materials science
Spectrum analysis
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Summary:Fe in--diffusion was performed by depositing a Fe film on X-cut LN substrates by sputtering and subsequent annealing in a controlled atmosphere. The photorefractive properties of the Fe:LN film were studied by confocal Micro-Raman spectroscopy. The presence of unexpected lines in the Raman spectra of the samples was detected and attributed to the activation by the photoinduced space charge field which is also the cause of the photorefractive effect. The results in Fe-doped samples are compared to those recorded in nominally pure congruent crystals. [PUBLICATION ABSTRACT]
ISSN:0015-0193
1563-5112