Analysis of Optical Phonon Vibrations in Raman Spectrostroscopy of Lithium Niobate Crystal 


Ngurah Made D.P., Md. Rahim Sahar and Md. Radzi Sudin


Physics Department, Faculty of Science,

Universiti Teknologi Malaysia,

81310 UTM Skudai, Johor Bahru





The Raman spectrum of LiNbO3 has been measured for various scattering configurations in crystals with different compositions. The comparison between spectra recorded for congruent and the nearly stoichiometric crystals shows significant differences in the shape and the number of Raman peaks. The analysis of results may be used to describe a complete vibrational modes of the long-wavelength optical phonos in LiNbO3 crystals.



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