期刊
OPTICS EXPRESS
卷 20, 期 16, 页码 17380-17385出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.20.017380
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资金
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) through the National Institute of Photonics (INCT Project)
- CNPq
- FACEPE (Fundacao de Amparo a Ciencia e Tecnologia do Estado de Pernambuco) through the PRONEX program
We developed a new scheme for obtaining coherent random lasing based on a chip consisting of a polymer film doped with Rhodamine 6G, having as scatterers butterfly-like TiO2 nanomembranes (TiO2-NM) supported on a glass substrate. The feedback mechanism for laser action is due to the multiple scattering of light by TiO2-NM rather than provided by localized variations of the refractive index in the polymer film. The above-threshold multiple spikes signature indicative of random laser emission with coherent feedback is confirmed. As nanomembranes are foreseen as new MEMS/NEMS building blocks, a new generation of combined active/passive photonic devices can be envisaged. (C) 2012 Optical Society of America
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