A random laser based on electrospun polymeric composite nanofibers with dual-size distribution

• Published in: Nanoscale advances 2019-02, Vol.1 (2), p.728-734
• Main Authors: Albuquerque de Oliveira, Mário César, de Souza Menezes, Leonardo, Pincheira, Pablo I. R, Rojas-Ulloa, Carlos, Gomez, Nikifor Rakov, de Oliveira, Helinando Pequeno, Leônidas Gomes, Anderson Stevens
• Format: Article
• Language: English
• Subjects: Chemistry
• ISSN: 2516-0230; 2516-0230
• DOI: 10.1039/c8na00277k

Electrospun fiber-based random lasers are environment-friendly flexible systems in which waveguiding/scattering processes provided by their structure with a broad distribution of diameters are essential elements to generate a suitable lasing mechanism. In this work, we prepared electrospun fibers with dual-size diameter distribution (above and below the critical value for waveguiding), allowing that both optical processes can be established in the polymer network. As a result, random laser emission was observed for the electrospun fibers presenting dual-size diameters with rhodamine 6G as the gain medium, characterizing the combination of waveguiding/scattering as an adequate condition for development of organic nanofibrous random lasers. Degradation assays were also performed in order to evaluate the prolonged use of such random laser systems. Electrospun fiber-based random lasers are environment-friendly flexible systems in which waveguiding/scattering processes provided by their structure with a broad distribution of diameters are essential elements to generate a suitable lasing mechanism.