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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

One axis guided random laser emission from a glass capillary composite

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Author(s):
Alves, Caroline Cassia [1] ; Lima Ribeiro, Sidney Jose [2] ; Mendonca, Cleber Renato [3] ; de Boni, Leonardo [3] ; Almeida Caiut, Jose Mauricio [1]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, BR-14040901 Ribeirao Preto, SP - Brazil
[2] Sao Paulo State Univ, UNESP, Inst Chem, BR-14801970 Araraquara, SP - Brazil
[3] Univ Sao Paulo SP, Inst Fis Sao Carlos, Sao Paulo, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Journal of Luminescence; v. 211, p. 426-430, JUL 2019.
Web of Science Citations: 0
Abstract

Random lasers are structures in which light is both, multiply scattered and amplified. The present study uses Rhodamine B and organic-inorganic hybrid materials to investigate the random lasing properties of silica capillary systems. The composite was prepared by dispersing the dye into an aluminoxane-epoxy-siloxane hybrid together with Boehmite powder, which are subsequently used to fill fused silica capillaries. In this system, Rhodamine B and Boehmite particles act at the same time as a gain and scattering medium, respectively. Random laser emission was performed by using the second harmonic of a 100-ps Nd:YAG laser as pump source; a typical laser threshold behavior was observed for a pumping fluency of 6 mu J/mm(2). The random laser emission spectrum also displays a tunable behavior. This resulted from a combination of the broad emission spectrum of the dye with the different Boehmite particle sizes allied with the advantage of the capillary geometry. (AU)

FAPESP's process: 16/11670-5 - NANOMATERIALS AND LUMINESCENT SYSTEMS BASED ON RARE EARTH IONS
Grantee:José Maurício Almeida Caiut
Support type: Regular Research Grants