Author/Authors :
De Boni، نويسنده , , L and Rodrigues Jr.، نويسنده , , J.J and dos Santos Jr.، نويسنده , , D.S. da Silva، نويسنده , , C.H.T.P and Balogh، نويسنده , , D.T and Oliveira Jr.، نويسنده , , O.N and Zilio، نويسنده , , S.C and Misoguti، نويسنده , , L and Mendonça، نويسنده , , C.R، نويسنده ,
Abstract :
We report on the two-photon absorption (2PA) cross-section for eight azoaromatic compounds in dimethyl sulfoxide solutions, using the Z-scan technique with femtosecond laser pulses at 775 nm. The 2PA cross-sections of these molecules are of the order of (1–6)×10−50 cm4 s photon−1. A correlation was established between the molecular structure and the two-photon absorption process, which makes it possible to develop molecular design strategies to create structures with suitable two-photon absorption coefficients.
