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The dependences of linear losses coefficient alpha and two- photon absorption constant beta on structure and concentration x or average coordination number r changes of Ge-As-S glasses along the As-GeS2, As-Ge2S3, As2S3-GeS2 and As2S3-Ge2S3 section have been experimentally studied. The critical values of x and r at which the alpha and beta reach their extrema were determined. The obtained results have been discussed in terms of phase and structure-topological transitions.© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. |
