Optical gain in porous silicon grains embedded in sol-gel derived SiO.sub.2./sub. matrix under femtosecond excitation

LUTEROVÁ, K., DOHNALOVÁ, K., ŠVRČEK, V., PELANT, I., LIKFORMAN, J. P., GRÉGUT, O., GILLOT, P., HÖNERLAGE, B. Optical gain in porous silicon grains embedded in sol-gel derived SiO₂ matrix under femtosecond excitation. Applied Physics Letters. 2004, 84(17), 3280-3282. ISSN 0003-6951. E-ISSN 1077-3118.