Near Infrared Light Amplification in Dye-Doped Polymer Waveguide

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概要

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• We have investigated near infrared amplified spontaneous emission (ASE) in dye-doped polymer waveguides under optical pumping. As a near infrared emitting dye, 2-[7-(1,3-dihydro-1,3,3-trimethyl-2H-indol-2-ylidene)-1,3,5-heptatrienyl]-1,3,3-trimethyl-3H-indolium iodide dispersed in poly(vinylpyrrolidone) was used. Dye-doped polymer waveguides were made by spin coating on glass substrates. According to gain and loss measurements at ASE peak wavelengths, the waveguides exhibited a very large net gain of 34.8 cm-1 and a low loss of 8.4 cm-1. This high gain performance was obtained at a dye concentration of 2.0 wt %, and was attributed to a large effective stimulated emission cross section of the doped dye. Furthermore, ASE wavelengths were varied in a range of 825–870 nm by doping concentrations because of self-absorption effects.

• 2006-04-25

著者

• Oe Kunishige

  Department Of Electronics And Information Science Faculty Of Engineering And Design Kyoto Institute

• Yanagi Hisao

  Faculty Of Engineering Kobe University

• Yamashita Kenichi

  Department Of Applied Chemistry School Of Engineering Kyushu University

• Sakata Isao

  Graduate School Of Science And Technology Kobe University

• Fujimoto Shuhei

  Graduate School Of Engineering Hokkaido University

• Oe Kunishige

  Department of Electronics and Information Science, Kyoto Institute of Technology, Goshokaidocho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan

• Sakata Isao

  Graduate School of Science and Technology, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan

• Fujimoto Shuhei

  Graduate School of Science and Technology, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan

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