Abstract
Abstract The structural characteristic of silica porous glasses produced by etching of sodium-borosilicate substrates were investigated using absorption-desorption isotherm technique, optical and electrical microscopy, optical transmission and luminescence measurements. Both initial porous glasses and porous glasses with carbon impregnations were tested. The observed peculiarities are related to the morphology of porous glasses which can be modified by preliminary thermal and chemical treatments and has a fractal character. Possible applications of the porous glasses, particularly the optical absorption filters with different carbon content in the silica matrix are discussed in detail.
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