Tunable organic thin-film laser pumped by an inorganic violet diode laser
2006; American Institute of Physics; Volume: 88; Issue: 24 Linguagem: Inglês
10.1063/1.2211947
ISSN1520-8842
AutoresThomas Riedl, Torsten Rabe, H.‐H. Johannes, Wolfgang Kowalsky, J. Wang, T. Weimann, P. Hinze, Benjamin S. Nehls, Tony Farrell, Ullrich Scherf,
Tópico(s)Photochemistry and Electron Transfer Studies
ResumoWe demonstrate an organic thin-film distributed feedback (DFB) laser pumped by an inorganic violet laser diode (λ=406nm). The active organic medium consists of a highly efficient, modified poly(9,9-dioctylfluorene) derivative containing 12% of statistical intrachain 6,6′-(2,2′-octyloxy-1,1′-binaphthalene) binaphthyl spacer groups. The polymer is doped with 4wt% of the stilbene dye 1,4-bis(2-(4-(N,N-di(p-tolyl)amino)phenyl)vinylbenzene). This guest-host system features minimum lasing threshold energy densities below 1μJ∕cm2 for second order DFB resonator geometries and significant absorption (7.3×104cm−1) at the wavelength of the pumping diode laser. The entire setup states an extremely compact and cost effective, laser source tunable between 496 and 516nm.
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