Raman characterization of H:LiNbO3 waveguides

Research paper by I. Savova, I. Savatinova, P. Kircheva, E. Liarokapis

Indexed on: 23 Apr '14Published on: 23 Apr '14Published in: Applied Physics B


In this work we present polarized Raman measurements of z-cut multimode H:LiNbO3 waveguides in the κi- and βi-phase states. A spectrum with unexpected form and behaviour, originating from the layer at the very surface, was observed in samples with various degrees of Li–H substitution. Possible reasons for the presence of this strange spectrum are considered.