Title :
Two-photon pumped fluorescence and lasing of phenalenon derivatives
Author :
Svetlichnyi, V.A. ; Kopylova, T.N. ; Samsonova, L.G. ; Reznichenko, V.A. ; Dolotov, S.M.
Author_Institution :
Tomsk State Univ., Russia
Abstract :
Two-photon pumped fluorescence and lasing of phenalenon derivatives is presented in this paper. Results of investigations in spontaneous and stimulated emissions of 4 organic molecules of phenalenon derivatives (phenalemines) in solutions and polymer matrices of polymethylmethacrylate (PMMA) under two-photon excitation with Nd3+ :YAG-laser radiation (1064 nm, 7 ns, and 40 mJ) are given. The efficiency of two- photon fluorescence (TPF) of these compounds is estimated compared to rhodamine 6G. The spectra of conventional fluorescence and TPF and also the TPF efficiency in ethanol solutions and PMMA are compared. For one of the examined compounds (phenalemine 512) with a maximum TPF efficiency of (4-5)·10-9 cm4·s/photon·mol, two-photon lasing in ethanol solution and PMMA has been excited in spectral ranges centered at 629 and 615 nm, respectively. The prospects for applications of the examined materials are also discussed.
Keywords :
dye lasers; dyes; fluorescence; high-speed optical techniques; optical materials; optical pumping; spontaneous emission; stimulated emission; two-photon processes; 1064 nm; 40 mJ; 590 to 660 nm; 7 ns; Nd3+ :YAG-laser radiation; YAG:Nd; YAl5O12:Nd; ethanol solutions; laser dye; lasing; organic molecules; phenalemine 512; phenalemines; phenalenon derivatives; polymer matrices; polymethylmethacrylate; red spectral range; rhodamine 6G; spontaneous emissions; stimulated emissions; two-photon excitation; two-photon lasing; two-photon pumped fluorescence; Biomedical optical imaging; Fiber lasers; Fiber nonlinear optics; Fluorescence; Laser excitation; Nonlinear optics; Optical harmonic generation; Optical pumping; Pump lasers; Stimulated emission;
Conference_Titel :
Lasers and Electro-Optics, 2003. CLEO/Pacific Rim 2003. The 5th Pacific Rim Conference on
Print_ISBN :
0-7803-7766-4
DOI :
10.1109/CLEOPR.2003.1277084
