{"title":"Experimental Studies on the Random Lasing of Dye Doped in XFJ151-Magnetic Mesoporous Silica Nanoparticles","authors":"Longwu Li, Zhen-Zhen Shang, Xiaofei Dong, Xinmeng Yu","doi":"10.1007/s13538-025-01890-y","DOIUrl":null,"url":null,"abstract":"<div><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></div>","PeriodicalId":499,"journal":{"name":"Brazilian Journal of Physics","volume":"55 6","pages":""},"PeriodicalIF":1.7000,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Brazilian Journal of Physics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s13538-025-01890-y","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
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.
期刊介绍：
The Brazilian Journal of Physics is a peer-reviewed international journal published by the Brazilian Physical Society (SBF). The journal publishes new and original research results from all areas of physics, obtained in Brazil and from anywhere else in the world. Contents include theoretical, practical and experimental papers as well as high-quality review papers. Submissions should follow the generally accepted structure for journal articles with basic elements: title, abstract, introduction, results, conclusions, and references.
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