Amplified spontaneous emission of 3-(1,1-dicyanoethenyl)-1-phenyl-4,5-dihydro-1H-pyrazole molecule embedded in various polymer matrices

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• 作者：Jaroslaw Mysliwiec^a ; Lech Sznitko^a ; ^{lech.sznitko@pwr.wroc.pl} ; Adam Szukalski^a ; Kacper Parafiniuk^a ; Stanislaw Bartkiewicz^a ; Andrzej Miniewicz^a ; Bouchta Sahraoui^b ; Ileana Rau^c ; Francois Kajzar^c
• 关键词：Amplified spontaneous emission ; Photodegradation ; Photostability ; Exponential gain coefficient
• 刊名：Optical Materials
• 出版年：2012
• 出版时间：August, 2012
• 年：2012
• 卷：34
• 期：10
• 页码：1725-1728
• 全文大小：617 K

文摘

Results of studies on the amplified spontaneous emission (ASE) phenomenon in 3-(1,1-dicyanoethenyl)-1-phenyl-4,5-dihydro-1H-pyrazole (DCNP) molecules in four different polymeric matrices are reported. We have analyzed ASE spectra coming from thin films of DCNP-matrix samples when excited by the Nd:YAG nanosecond pulsed laser doubled in frequency (¦Ë = 532 nm). We report on ASE characteristics in function of different excitation pulse energy densities evaluating ASE thresholds, exponential gain coefficients and reporting the influence of the specific matrix-dye interactions on the photo-degradation process of the dye.