GLASS WITH NANOCRYSTALS OF LEAD SELENIDE FOR SATURABLE ABSORBERS Russian patent published in 2008 - IPC C03C10/02 B82B3/00 

FIELD: chemistry.

SUBSTANCE: present invention can be used in laser technology as anti-reflection filters - saturable absorbers for lasers, working in the near infrared range of the spectrum. Formation of nanoparticles in the glass, with size ranging from 1.2 to 10 nm and size distribution closer to monodisperse distribution, is achieved as a result of secondary thermal treatment of the glass, at temperature close to glass transition temperature. The proposed glass consists of the following components with the given ratios, in wt %: P₂O₅ 45-55, Ga₂O₃ 14-30, Na₂O 15.5-16.5 ZnO 3.5-6.1, NaF 1.3-2, AlF₃ 1-2.6, PbF₂ 0.3-2.0, PbSe 2.4-2.8.

EFFECT: formation of nanoparticles of lead selenide with small dimensions, characterised by high concentration and narrow size distribution, providing for spectral absorption and anti-reflection in the near infrared range of the spectrum.

2 tbl