Flexible random lasers in dye-doped bio-degradable cellulose nanocrystalline needles
| Autor: | Edison Pecoraro, Lucas M. Martinho, Gleice C. M. Germano, Susete N. Fernandes, Anderson S. L. Gomes, Antonio M.L.M. Costa, Isabel C. S. Carvalho, Yan Dalton Machado |
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| Přispěvatelé: | DCM - Departamento de Ciência dos Materiais, CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N), Pontifical Catholic University of Rio de Janeiro, Universidade NOVA de Lisboa, Universidade Estadual Paulista (Unesp), Universidade Federal de Pernambuco (UFPE) |
| Rok vydání: | 2019 |
| Předmět: |
Random laser
Materials science Hydroxypropyl cellulose Statistical and Nonlinear Physics Laser 7. Clean energy 01 natural sciences Atomic and Molecular Physics and Optics Nanocrystalline material law.invention 010309 optics chemistry.chemical_compound chemistry Chemical engineering law 0103 physical sciences Cellulose Suspension (vehicle) Lasing threshold Ethylene glycol |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 1520-8540 0740-3224 |
| DOI: | 10.1364/josab.37.000024 |
| Popis: | In this work, we developed and investigated a random laser based on rhodamine6G (Rh6G) in ethylene glycol (EG) solution with varying cellulose nanocrystalline (CNC) needles as scatterers in the lasing media. Besides the suspension-in-cuvette scheme, an alternative configuration was also employed: a dye-CNC flexible self-supported thick-film (70 µm) random laser made by drop casting of the C N C s + R h 6 G + h y d r o x y p r o p y l cellulose suspension. In relation to conventional scatterers, the biodegradable cellulose nanocompounds showed a comparable reduction in both the spectral full width at half-maximum and the energy threshold values, with an optimal concentration of 5 mg [CNC]/ml[EG] in suspension. Its performance was also compared with other cellulose-based random lasers, presenting advantages for some parameters. The flexible film configuration showed similar results, but contained 10% less Rh6G than the suspension. |
| Databáze: | OpenAIRE |
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