Chalcogenide Glasses Based on Germanium Disulfide for Second Harmonic Generation (pages 3284–3294)
M. Guignard, V. Nazabal, F. Smektala, J.-L. Adam, O. Bohnke, C. Duverger, A. Moréac, H. Zeghlache, A. Kudlinski, G. Martinelli and Y. Quiquempois
Article first published online: 11 SEP 2007 | DOI: 10.1002/adfm.200700047
High second-order susceptibilities were created by thermal poling in bulk germanium disulfide based chalcogenide glasses. The second-order nonlinear signals were recorded by using a Maker fringes experiment (see figure), and a second-order coefficient χ(2) up to 8 pm V–1 was measured in Ge25Sb10S65 glass. Migration of Na+ ions towards the cathode may be responsible for the creation of a second-order nonlinearity in this sulfide glass.