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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.)

Tunable random lasing in dye-doped mesoporous silica SBA-15

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Author(s):
De Vicente, Fabio S. [1] ; Moreno, Leandro X. [1] ; Prado, Marcus V. A. [2, 3] ; Abegao, Luis M. G. [4, 5] ; Melo, Leandro A. [2, 3] ; Rodrigues Jr, Jose J. ; Alencar, Marcio A. R. C. [6, 7]
Total Authors: 7
Affiliation:
[1] Univ Estadual Paulista, UNESP, IGCE, Dept Fis, BR-13506900 Rio Claro, SP - Brazil
[2] Univ Fed Sergipe UFS, Dept Fis, BR-49100000 Sao Cristovao, SE - Brazil
[3] Univ Fed Sergipe UFS, Lab Corrosao & Nanotecnol LCNT, BR-49100000 Sao Cristovao, SE - Brazil
[4] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil
[5] Univ Fed Goias, Inst Fis, BR-74690900 Goiania, Go - Brazil
[6] Rodrigues Jr, Jr., Jose J., Univ Fed Sergipe UFS, Dept Fis, BR-49100000 Sao Cristovao, SE - Brazil
[7] Rodrigues Jr, Jr., Jose J., Univ Fed Sergipe UFS, Lab Corrosao & Nanotecnol LCNT, BR-49100000 Sao Cristovao, SE - Brazil
Total Affiliations: 7
Document type: Journal article
Source: PHYSICAL REVIEW MATERIALS; v. 5, n. 2 FEB 25 2021.
Web of Science Citations: 0
Abstract

Mesoporous silica, known as SBA-15, possesses a hexagonal pore structure, with 8-nm-diameter pores and high surface area (similar to 700 m(2)/g). The mesoporosity of SBA-15 is excellent to be filled with luminescent chromophores aiming at optical and photonic applications. SBA-15 powder infiltrated with Rhodamine B (RB) was prepared with different RB loads. Using the second harmonic of a pulsed Nd:yttrium aluminum garnet (YAG) laser (8 ns, 10 Hz) as the excitation source, the light emission spectra of the samples were investigated. Typical incoherent feedback random laser behavior was observed. Tunable random laser emissions from 579 to 585 nm were obtained depending on the excitation laser spot diameter and the RB load. The results indicate that mesoporous SBA-15 infiltrated with RB is a promising material for the development of solid-state random lasers. (AU)

FAPESP's process: 11/18149-5 - Study of Photosensitivity and photoluminescence in organically modified silicates films prepared by sol-gel
Grantee:Fábio Simões de Vicente
Support Opportunities: Regular Research Grants