Flexible random lasers in dye-doped bio-degradable cellulose nanocrystalline needles
Abstract
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 04, 2019
- Source ID
- 10.1364/josab.37.000024
Entities
People
- Anderson S. L. Gomes
- Antonio Mario L. M. Costa
- Edison Pecoraro
- Gleice C. M. Germano
- Isabel Cristina dos Santos Carvalho
- Lucas Martinho
- Susete N. Fernandes
- Yan D. R. Machado
Organizations
- Coordenação de Aperfeicoamento de Pessoal de Nível Superior
- European Regional Development Fund
- Financiadora de Estudos e Projetos
- Fundação de Amparo à Ciência e Tecnologia de Pernambuco
- Fundação para a Ciência e Tecnologia
- National Council for Scientific and Technological Development
- Office of Naval Research Global