Amplified spontaneous emission and laser emission from a high optical-gain medium of dye-doped dendrimer

Shiyoshi Yokoyama, Tatsuo Nakahama, Shinro Mashiko

研究成果: Contribution to journalArticle査読

15 被引用数 (Scopus)

抄録

We measured the amplified spontaneous emission and laser emission from high-gain media of laser-dye encapsulated dendrimers. A highly branched poly(amidoamine) (PAMAM-OH) dendrimer formed a guest-host complex with a conventional laser-dye (DCM), resulting in a high optical-gain. Of particular note was the appearance of a laser threshold, above which a super-narrowed laser spectrum was observed, although laser feedback was caused without any mirror cavity devices. The optical feedback was attributed to spatial confinement of the light due to gain guiding under optical excitation. The laser spectrum clearly indicated a resonant laser-mode with a spectrum linewidth of less than 0.1 nm. This order of spectrum narrowing is comparable to that seen in the laser emission from ordinary laser devices.

本文言語英語
ページ(範囲)285-290
ページ数6
ジャーナルJournal of Luminescence
111
4 SPEC. ISS.
DOI
出版ステータス出版済み - 3 2005
外部発表はい

All Science Journal Classification (ASJC) codes

  • 生物理学
  • 生化学
  • 化学 (全般)
  • 原子分子物理学および光学
  • 凝縮系物理学

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