Artículos de revistas
Random laser emission from a Rhodamine B-doped GPTS/TEOS-derived organic/silica monolithic xerogel
Laser Physics Letters, v. 14, n. 6, 2017.
Universidade Federal de Sergipe (UFS)
Universidade Estadual Paulista (UNESP)
Universidade Federal de São Carlos (UFSCar)
Universidade de São Paulo (USP)
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.