Random lasing at localization induced in correlated colloidal system

Dominguez, C. Tolentino; Gomes, Anderson A. V.; Wetter, Niklaus Ursus; Dipold, Jessica; Mestre, Valdeci; Martins, Weliton S.; Jiménez‐Villar, Ernesto

doi:10.1016/j.optmat.2021.111428

Cited by 7 publications

(1 citation statement)

References 45 publications

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“…Currently, RLs are fabricated from dyes [ 4 ], crystal powders [ 5 ], polymers [ 6 ], fibers [ 7 ], and nanoparticles doped with rare-earth ions [ 8 ], among other materials [ 9 , 10 , 11 , 12 ]. High-efficiency RLs have been demonstrated in neodymium (Nd)-doped materials [ 5 ], showing the promising capabilities of this kind of rare-earth random laser.…”

Section: Introductionmentioning

confidence: 99%

1337 nm Emission of a Nd3+-Doped TZA Glass Random Laser

Dipold

Bordon²,

Magalhães

et al. 2023

Nanomaterials

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Random lasers have been studied using many materials, but only a couple have used glass matrices. Here, we present a study of zinc tellurite and aluminum oxide doped with different percentages of neodymium oxide (4 wt.%, 8 wt.%, and 16 wt.%) and demonstrate for the first time random laser action at 1337 nm. Laser emission was verified and the laser pulse’s rise time and input–output power slope were obtained. A cavity composed of the sample’s pump surface and an effective mirror formed by a second, parallel layer at the gain-loss boundary was probably the main lasing mechanism of this random laser system. The reason for the absence of emission at 1064 nm is thought to be a measured temperature rise in the samples’ active volume.

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Section: Introductionmentioning

confidence: 99%

1337 nm Emission of a Nd3+-Doped TZA Glass Random Laser

Dipold

Bordon²,

Magalhães

et al. 2023

Nanomaterials

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Random Lasers: Review of Research Activities at IPEN

Wetter,

Ribamar Vieira,

da Silva

et al. 2023

2023 International Conference on Optical MEMS and Nanophotonics (OMN) and SBFoton International Optics and Photonics Conference

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Ordered photonic colloidal suspensions

2023

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Ordered photonic structures (photonic crystals) have seen increasing interest in recent years due to their potential applications, which depend on fabrication technologies suitable for mass production. In this paper, we studied by light diffraction the order in photonic colloidal suspensions composed by core-shell (TiO2@Silica) nanoparticles suspended in ethanol and water solutions. Light diffraction measurements show order in these photonic colloidal suspensions, being stronger in ethanol compared with suspensions in water. Strong and long-range Coulomb interaction explains the order and correlation in the scatterers’ (TiO2@Silica) position, which favors significantly the interferential processes as localization of light.

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Random lasing at localization induced in correlated colloidal system

Cited by 7 publications

References 45 publications

1337 nm Emission of a Nd3+-Doped TZA Glass Random Laser

1337 nm Emission of a Nd3+-Doped TZA Glass Random Laser

Random Lasers: Review of Research Activities at IPEN

Ordered photonic colloidal suspensions

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