PROJECT EXECUTIVE SUMMARY (ENGLISH)

The project aims to expand the range of instruments for measuring the power of laser beams in various applications by applying innovative solutions regarding the volume absorbers, the detector’s geometry and its operating principle. The project focuses on analyzing viable solutions for measuring the energy of continuous-wave CO2 lasers using phosphate tellurite glasses as volume absorbers.
Briefly, the volume absorbers convert laser energy into heat energy through optical absorption. The heat transfer through the volume absorbers is measured at the backside using convenient thermocouples.
The superior properties of phosphate tellurite glasses, compared with the silicate glasses widely used as volume absorbers, make them more suitable as volume absorbers, including a lower specific heat for a temperature range below 500 C and higher thermal conductivity, together with higher absorbance in the infrared region and a shorter time for the heat transfer along the thickness of the volume absorbers.