Increase in the lasing efficiency of thin-film lasers based on 1.4-distirylbenzene E. N. Nikonova, E. N. Tel'minov, T. N. Kopylova [et al.]
Material type: ArticleSubject(s): тонкопленочные лазеры на основе 1,4-дистирилбензола | стимулированное излучениеGenre/Form: статьи в журналах Online resources: Click here to access online In: Russian physics journal Vol. 60, № 11. P. 2036-2039Abstract: The possibility of development of a thin-film 1,4-distirylbenzene–based laser lasing in the blue spectral range in solutions and films is investigated. The stimulated emission of 1,4-distirylbenzene in a polymethylmethacrylate film with transverse pumping by a YAG-Nd3+ laser is obtained for the threshold power density W = 0.44 MW/cm2. It is shown that incorporation of the additional amorphous SiO2 layer, improving the condition of total internal reflection on the boundary of the active medium, decreases the lasing threshold to 50–70 kW/cm2; in this case, the efficiency of radiation conversion is equal to 20%.Библиогр.: 5 назв.
The possibility of development of a thin-film 1,4-distirylbenzene–based laser lasing in the blue spectral range in solutions and films is investigated. The stimulated emission of 1,4-distirylbenzene in a polymethylmethacrylate film with transverse pumping by a YAG-Nd3+ laser is obtained for the threshold power density W = 0.44 MW/cm2. It is shown that incorporation of the additional amorphous SiO2 layer, improving the condition of total internal reflection on the boundary of the active medium, decreases the lasing threshold to 50–70 kW/cm2; in this case, the efficiency of radiation conversion is equal to 20%.
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