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

Vicente, Fábio Simões de; Moreno, Leandro Xavier; Prado, Marcus Vinícius Alves; Abegão, Luis Miguel Gomes; Melo, Leandro A.; Rodrigues Júnior, José Joatan; Alencar, Marcio Andre Rodrigues Cavalcanti de

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

Data

2021

Autores

Vicente, Fábio Simões de

Moreno, Leandro Xavier

Prado, Marcus Vinícius Alves

Abegão, Luis Miguel Gomes

Melo, Leandro A.

Rodrigues Júnior, José Joatan

Alencar, Marcio Andre Rodrigues Cavalcanti de

Resumo

Mesoporous silica, known as SBA-15, possesses a hexagonal pore structure, with 8-nm-diameter pores and high surface area (∼700m2/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.

Citação

VICENTE, Fábio S. de et al. Tunable random lasing in dye-doped mesoporous silica SBA-15. Physical Review Materials, College Park, v. 5, e025203, 2021. DOI: 10.1103/PhysRevMaterials.5.025203. Disponível em: https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.5.025203. Acesso em: 28 fev. 2024.