Observation of the two-photon transition enhanced first hyperpolarizability spectra in cinnamaldehyde derivatives: a femtosecond regime study - Santos, Carlos Henrique Domingues dos; Cocca, Leandro Henrique Zucolotto; Pelosi, André Gasparotto; Batista, Vasco Figueiredo; Pinto, Diana Cláudia Gouveia Alves; Faustino, Maria do Amparo Ferreira; Vivas, Marcelo Gonçalves; Siqueira, Jonathas de Paula; Mendonça, Cleber Renato; De Boni, Leonardo (Journal of Chemical Physics, 2023)