Random laser oscillation from an organic fluorescent dye loaded inside a porous zirconia medium

Yukari Sakurayama, Tsunenobu Onodera, Yasuyuki Araki, Takehiko Wada, Hidetoshi Oikawa

研究成果: ジャーナルへの寄稿学術論文査読

3 被引用数 (Scopus)

抄録

Porous zirconia medium (PZrM) has been fabricated successfully using polystyrene microparticles (MPs) as templates. The emission spectra of rhodamine B (RhB) [optical amplifying medium] loaded inside PZrM [porous scatterers] were obtained at numerous excitation light intensities. The lasing thresholds (Ith) have been determined experimentally from the variations in the intensity of random laser oscillation peaks, which are suitably separated from the measured emission spectra. Ith is closely related to the pore sizes of PZrM and the added amount of PZrM powder, and it clearly provided the minimum against the pore size. This fact is explained reasonably by the simulation of scattering efficiency on the basis of the Mie scattering theory. Consequently, PZrM as a porous scatterer is superior to Zr MPs from the viewpoint of random laser oscillation.

本文言語英語
ページ(範囲)32030-32037
ページ数8
ジャーナルRSC Advances
11
51
DOI
出版ステータス出版済み - 2021 9月 8

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