Phosphate-silicate laser neodymium glass with thermal shock resistance, and preparation method thereof

Abstract

The invention discloses phosphate-silicate laser neodymium glass with thermal shock resistance, and a preparation method thereof. The glass is composed of 40-56mol% of P2O5, 8-22mol% of SiO2, 15-20mol% of Al2O3, 10-15mol% of MgO, 10-15mol% of Li2O, 0.2-3mol% of Nd2O3, and 0-0.3mol% of Sb2O3. The phosphate-silicate laser neodymium glass has relatively low thermal expansion coefficient, relatively high fracture toughness and relatively high thermal conductivity. The glass can withstand higher thermal shock and is prevented from being damaged. The glass also has a moderate stimulated emission cross section and a relatively long fluorescence lifetime, thus is widely applied as a gain medium in a repetition-frequency large-energy laser system.

Description

technical field [0001] The invention belongs to the field of laser glass preparation, and in particular relates to a heat-shock-resistant phospho-silicate laser neodymium glass and a preparation method thereof. The glass has a low coefficient of thermal expansion, high fracture toughness and high thermal conductivity. At the same time, it has a moderate stimulated emission cross section and a high fluorescence lifetime, and can be used in a repetition frequency high energy laser system. technical background [0002] Phosphate laser glass has the advantages of moderate phonon energy and good spectral performance, and is widely used in high-energy, high-peak power laser devices at home and abroad. However, the existing phosphate laser glass has poor thermomechanical properties and is difficult to withstand Strong thermal shock limits its application in heavy-frequency high-energy laser systems, so it is extremely important to find phosphate laser glasses with superior thermome...

AI Technical Summary

Problems solved by technology

However, these glasses are still unable to meet the increasing requirements for the thermomechanical properties of neodymium glass in heavy-frequency high-energy laser systems, so it is very important to further improve the thermomechanical properties of neodymium glass

[0006] The advantage of silicate glass is that it has good thermomechanical properties and high chemical stability, but its spectral properties are poor

While phosphate glass has excellent spectral properties, but is not as good as silicate glass in terms of thermomechanical properties

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