Zucolotto Cocca Leandro H, Romero André L S, Mercante Luiza A, Teodoro Kelcilene B R, Mendonça Cleber R, De Boni Leonardo, Correa Daniel S
Photonics Group, Institute of Physics, Federal University of Goia's, 74690-900 Goiânia, Goiás, Brazil.
Photonics Group, Institute of Physics of São Carlos, University of São Paulo, 13560-970 São Carlos, São Paulo, Brazil.
ACS Omega. 2025 Jul 23;10(30):33288-33294. doi: 10.1021/acsomega.5c03313. eCollection 2025 Aug 5.
The development of flexible optical and photonic devices has attracted growing interest due to their promising applications in optical sensing and light-emitting technologies. Among these, devices based on random lasers stand out for their simple fabrication and unique emission properties. However, despite advances using various scattering centers, the use of electrospun fibers as scattering centers for random laser emission is still limited. Here, we propose a novel random laser design by incorporating electrospun polyacrylonitrile (PAN) fibers as scattering centers within a flexible, portable polymeric substrate doped with rhodamine 6G as the gain medium. The resulting platform exhibits efficient random lasing with spectral narrowing below 10 nm [full width at half-maximum (fwhm)] and low excitation thresholds near 2 × 10 J. These results demonstrate a robust, easy-to-fabricate, and flexible random laser system with potential applications in optical sensors and photonic devices.
柔性光学和光子器件的发展因其在光学传感和发光技术方面的广阔应用前景而受到越来越多的关注。其中，基于随机激光器的器件因其简单的制造工艺和独特的发射特性而脱颖而出。然而，尽管使用各种散射中心取得了进展，但将电纺纤维用作随机激光发射的散射中心的应用仍然有限。在此，我们提出了一种新颖的随机激光设计，即将电纺聚丙烯腈（PAN）纤维作为散射中心，纳入掺有罗丹明6G作为增益介质的柔性、便携式聚合物基质中。所得平台展现出高效的随机激光发射，光谱半高宽（fwhm）窄于10 nm，激发阈值低至约2×10 J。这些结果证明了一种坚固、易于制造且灵活的随机激光系统，在光学传感器和光子器件中具有潜在应用。
