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<p>Our experimental study has focused on exploring visible random lasing phenomena in disordered active XFJ151-magnetic mesoporous silica nanoparticle thin films under optical pump excitation. The results reveal that the random lasing characteristics, which stem from multiple light scattering within these systems, generate lasing spectra associated with plasma excitation and localized photon fields. This mechanism facilitates lasing behavior at visible wavelengths. Furthermore, variations in emission intensity and shifts in the lasing threshold observed in these films are attributed to differences in photon localization intensity across random microcavities at distinct wavelengths. These lasing features originate from the confinement of laser microcavity modes due to photon localization within the active XFJ151-magnetic mesoporous silica nanoparticle thin film.</p>

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Experimental Studies on the Random Lasing of Dye Doped in XFJ151-Magnetic Mesoporous Silica Nanoparticles

  • 期刊论文

  • 发表日期：

    2025年10月2日

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  • Longwu Li,
  • Zhen-Zhen Shang,
  • Xiaofei Dong,
  • Xinmeng Yu

摘要

Our experimental study has focused on exploring visible random lasing phenomena in disordered active XFJ151-magnetic mesoporous silica nanoparticle thin films under optical pump excitation. The results reveal that the random lasing characteristics, which stem from multiple light scattering within these systems, generate lasing spectra associated with plasma excitation and localized photon fields. This mechanism facilitates lasing behavior at visible wavelengths. Furthermore, variations in emission intensity and shifts in the lasing threshold observed in these films are attributed to differences in photon localization intensity across random microcavities at distinct wavelengths. These lasing features originate from the confinement of laser microcavity modes due to photon localization within the active XFJ151-magnetic mesoporous silica nanoparticle thin film.