New Laser Media Based on Microporous Glasses,
INSTITUTE OF SILICATE CHEMISTRY LENINGRAD (USSR)
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The results of the investigation of new class of the laser media based on dye solutions impregnated microporous glasses are presented. Based on such media high-effective active elements of tunable dye lasers and passive modulators for solid-state lasers are created. This article is devoted to laser media of the new type - the heterogenous solid-liquid media on the basis of the impregnated by the solutions of the dyes of the microporous glasses. The microporous glasses represent themselves the products of the leaching of heat - treated sodium borosilicate glasses of a certain composition range. As a result of heat treatment is realized the phase separated glass. It consists of two interconnected phases the silica rich phase and the chemical unstable sodium - borate - rich phase. If we place this glass in the acid then the ions of sodium and borum will be transfered to the solution. As a result we obtain the porous glass and this poreses produce the continious claster. Therefore it could be easily impregnated by liquids and gases. On the walls of this poreses usually the grains of secondary silicon present and the porous glasses itselves on ninety eight percent consists of pure silicon. We now have the technology that permits us to obtain the samples with the volume porosity from ten to fifty percent and the size of this poroses could be varied from twenty angstrems up to one thousand angstrems1-9.
- Ceramics, Refractories and Glass