期刊
RSC ADVANCES
卷 10, 期 13, 页码 7551-7558出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra10462c
关键词
-
资金
- Ministry of Science and Technology of Taiwan (MOST) [108-2112-M-027-001, 106-2221-E-027-119-MY3]
The resonant energy transfer enhancement from a plasmonic random laser (PRL) has been investigated by means of a dye-covered PVA film with embedded silver nanoplates (DC-PVA/AgNPs). Different sizes and morphologies of AgNPs were adopted to shift the localized surface plasmon resonance (LSPR) and intensify recurrent light scattering between the AgNPs. For better overlap between surface plasmon resonance and the photoluminescence of fluorescent molecules with appropriately-sized silver nanoprisms, the slope efficiency of the PRL was greatly enhanced and the lasing threshold was obviously reduced. In addition, the photon lifetime for the DC-PVA/AgNPs film reveals an apparent decline around 1.39 ns owing to better coupling with LSPR. The stronger light scattering of samples with bigger-sized silver nanoprisms has been demonstrated by coherent back scattering measurements, which reveals a smaller transport mean free path around 3.3 mu m. With alpha-stable analysis, it has been successfully demonstrated that the tail exponent alpha can be regarded as an identifier of the threshold of random lasing.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据