||Special glasses on the base of heavy metal oxides
Petr Kostka, Ph.D.
The project deals with the study of heavy metal oxide (HMO) glasses
transmitting infrared radiation. It is focused on the study of tellurium
and/or antimony oxide based glasses in combination with easily
polarizable components, such as bismuth, with potentially significant
non-linear optical properties. Base glasses and those doped with
rare-earth (RE) ions are studied. The photoluminescence properties and
kinetics of doped glasses are investigated. The influence of
glass-forming matrix on the efficiency of radiative transitions of RE
ions is pursued. The structure of glasses is investigated by
spectroscopic methods with emphasis on infrared and Raman spectroscopy.
The project also deals with the purification methods of raw materials
and with new processes for preparing HMO glasses in view of considerable
reduction of impurities in the prepared material. Optical fibres will be
drawn from selected temperature stable glasses and their attenuation
will be measured. Expected results are in basic research area with the
impact on future applications of studied materials.