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

• Published in: Nanoscale advances Vol. 1; no. 2; pp. 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: Journal Article
• Language: English
• Published: England RSC 12.02.2019
• 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.