期刊
LASER PHYSICS LETTERS
卷 14, 期 6, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1612-202X/aa699b
关键词
random laser; silica nanoparticles; organic-inorganic hybrid material; incoherent feedback
资金
- FAPESP (Fundacao de Amparo a Pesquisa do Estado de Sao Paulo) [2011/12399-0, 2011/23587-1]
- CNPQ (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico)
- CAPES (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior)
- National Institute of Photonics (INCT de Fotonica), MCTI/CNPq/FACEPE [465763/2014-6]
A Rhodamine B-doped 3-glycidoxypropyltrimethoxysilane (GPTS)/tetraethyl orthosilicate (TEOS)-derived organic/silica monolithic xerogel with excellent optical properties was prepared and its potential as a random laser host investigated. This hybrid material has a non-porous organic/inorganic morphology with silica-rich nanoparticles of less than 10 nm in diameter homogeneously dispersed within the matrix. Random laser emission with incoherent feedback, centered at 618 nm, was observed from Rhodamine B incorporated into the monolithic xerogel when excited by a 532 nm pulsed laser. This hybrid system is shown to be very promising for the development of a new class of random laser-based integrated devices, with applications ranging from optical bio-imaging to sensing.
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