Stimulated emission in dendrimer-doped polymer waveguides

Akira Otomo, Sonoko Otomo, Shiyoshi Yokoyama, Shinro Mashiko

研究成果: ジャーナルへの寄稿会議記事査読

6 被引用数 (Scopus)

抄録

Stimulated emission was studied in dendrimer-doped polymer waveguides. A supernarrowing laser spectrum was observed without using any resonator mirrors, due to the moderate scattering caused by densely doped dendrimer aggregates in a polymer waveguide. At the optimum operation level, the spectral linewidth was found to be 0.55 nm, which was limited by the resolution of the spectrograph used. Weak scattering from the aggregated dendrimers in the host polymer matrix with gain was responsible for the photon localization. However, in contrast to conventional random lasers with strong scattering, weak scattering enables the long amplification path through the waveguide producing a directional beam and a supernarrowing spectrum. The dependence of supernarrowing lasing behavior on the density of the scattering moiety was studied by changing the dendrimer doping ratios in the polymer matrix.

本文言語英語
ページ(範囲)278-283
ページ数6
ジャーナルThin Solid Films
393
1-2
DOI
出版ステータス出版済み - 8月 1 2001
外部発表はい
イベント4th International Conference on Nano-Molecular Electronics - Kobe, 日本
継続期間: 12月 5 200012月 7 2000

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 表面および界面
  • 表面、皮膜および薄膜
  • 金属および合金
  • 材料化学

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