期刊
JOURNAL OF APPLIED PHYSICS
卷 115, 期 8, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.4866686
关键词
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资金
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), through the National Institute of Photonics (INCT de Fotonica)
- CNPq
- FACEPE (Fundacao de Amparo a Ciencia e Tecnologia do Estado de Pernambuco) through the PRONEX program
We demonstrate random lasing action in flexible bacterial cellulose (BC) membrane containing a laser-dye and either dielectric or metallic nanoparticles (NPs). The novel random laser system consists of BC nanofibers attached with Rhodamine 6G molecules and having incorporated either silica or silver NPs. The laser action was obtained by excitation of the samples with a 6 ns pulsed laser at 532 nm. Minimum laser threshold of approximate to 0.7 mJ/pulse was measured for the samples with silica NPs, whereas a laser threshold of 2.5 mJ/pulse for a system based on silver NPs was obtained. In both cases a linewidth narrowing from approximate to 50 to approximate to 4 nm was observed. Potential applications in biophotonics and life sciences are discussed for this proof-of-concept device. (C) 2014 AIP Publishing LLC.
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