Titanium nitride (TiN) is a promising plasmonic material with hard and abrasion-resistant specialities. In this study, a gain regime, namely, plasmon-enhanced random laser emission, is demonstrated in the Pyrromethene-597 (PM597) assisted by titanium nitride (TiN) film. For this, photoluminescence and random lasing are measured at different pumping energies from PM597/Silicon and PM597/TiN/Silicon samples. Enhanced lasing efficiency is observed in the PM597/TiN/silicon sample where a plasmon resonance is formed, which increases the energy transfer between TiN and PM597. Furthermore, the multiple scattering mediated by the TiN film also plays an important role for the lasing efficiency. It is worth mentioning that the random laser emission has a strong dependence on pump position. The study of the random laser from PM597/TiN/Silicon sample with film structure is aimed to obtain a good alternative (TiN) to replace noble metals at a lowest cost.

中文翻译：

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等离子体共振效应引起的氮化钛随机激光

氮化钛 (TiN) 是一种很有前途的等离子体材料，具有坚硬和耐磨的特性。在这项研究中，在由氮化钛 (TiN) 膜辅助的 Pyrromethene-597 (PM597) 中证明了增益机制，即等离子体增强的随机激光发射。为此，在 PM597/Silicon 和 PM597/TiN/Silicon 样品的不同泵浦能量下测量光致发光和随机激光。在 PM597/TiN/硅样品中观察到增强的激光效率，其中形成了等离子体共振，这增加了 TiN 和 PM597 之间的能量转移。此外，由 TiN 膜介导的多次散射对激光效率也起着重要作用。值得一提的是，随机激光发射对泵浦位置有很强的依赖性。