Random laser emission from neodymium doped zinc tellurite glass-powder presenting luminescence concentration quenching

Câmara, Josivanir G.; Silva, Davinson M. da; Kassab, L.R.P.; Araújo, Cid B. de; Gomes, Anderson S. L.

doi:10.1016/j.jlumin.2021.117936

Cited by 24 publications

(11 citation statements)

References 23 publications

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“…Although it is expected that a large concentration of Nd 2 O 3 in the glass samples causes luminescence concentration quenching (LCQ), we have already observed that the RL performance is enhanced for higher rare-earth ions concentrations, despite the occurrence of LCQ 30 . The reason is that the dynamic of the RL emission occurs in the nanosecond regime while the PL occurs is in the microsecond range 25 , 30 . The glasses were obtained by conventional melt-quenching technique.…”

Section: Methodsmentioning

confidence: 80%

“…Several years ago, an upconversion RL emitting in the UV, was reported based on a fluoroindate glass-powder doped with neodymium ions 29 . More recently, we demonstrated RL action in neodymium (Nd 3+ ) doped zinc-tellurite glass powders 30 . The RL feedback mechanism was provided by the light reflections on the glassy grains-air interfaces.…”

Section: Introductionmentioning

confidence: 99%

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Random lasing and replica symmetry breaking in GeO2-PbO-MgO glass–ceramics doped with neodymium

Câmara

Silva

Kassab

et al. 2022

Sci Rep

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We investigated the random lasing process and Replica Symmetry Breaking (RSB) phenomenon in neodymium ions (Nd3+) doped lead-germanate glass–ceramics (GCs) containing MgO. Glass samples were fabricated by conventional melt-quenching technique and the GCs were obtained by carefully devitrifying the parent glasses at 830 °C for different time intervals. The partial crystallization of the parent glasses was verified by X-ray diffraction. Photoluminescence (PL) enhancement of $$\approx$$ ≈ 500% relative to the parent glasses was observed for samples with a higher crystallinity degree (annealed during 5 h). Powders with grains having average size of 2 µm were prepared by griding the GCs samples. The Random Laser (RL) was excited at 808 nm, in resonance with the Nd3+ transition 4I9/2 → {4F5/2, 2H9/2}, and emitted at 1068 nm (transition 4F3/2 → 4I11/2). The RL performance was clearly enhanced for the sample with the highest crystallinity degree whose energy fluence excitation threshold (EFEth) was 0.25 mJ/mm2. The enhanced performance is attributed to the residence-time growth of photons inside the sample and the higher quantum efficiency of Nd3+ incorporated within the microcrystals, where radiative losses are reduced. Moreover, the phenomenon of Replica Symmetry Breaking (RSB), characteristic of a photonic-phase-transition, was detected by measuring the intensity fluctuations of the RL emission. The Parisi overlap parameter was determined for all samples, for excitation below and above the EFEth. This is the first time, for the best of the authors knowledge, that RL emission and RSB are reported for a glass–ceramic system.

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Section: Methodsmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Random lasing and replica symmetry breaking in GeO2-PbO-MgO glass–ceramics doped with neodymium

Câmara

Silva

Kassab

et al. 2022

Sci Rep

Self Cite

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“…38,39 However, the obtained value was comparable to the values reported for other oxide materials, thus confirming the high solubility of Nd 3+ in the studied samples and rendering the samples promising systems for solid-state laser and bioimaging applications. 108,109…”

Section: Resultsmentioning

confidence: 99%

Red and near-infrared emitting phosphors based on Eu³⁺- or Nd³⁺-doped lanthanum niobates prepared by the sol–gel route

et al. 2022

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“…Here we are interested in Nd 3+ based RLs, which are among the pioneering materials employed in the quest for RL emission 2 , 3 , 12 – 14 . Being an active material, the Nd 3+ ions randomly incorporated in micron- or nano-powders based on glass or crystal hosts 15 – 21 act simultaneously as gain and scattering media. Although the Nd 3+ ion can be excited in the visible to NIR (600–900 nm) range 17 , 18 , with the most important emission near 1064 nm, excitation around 808 nm is mostly employed due to the availability of powerful semiconductor laser sources, besides being one of the strongest absorption transitions in Nd 3+ , though with a relatively large quantum defect 17 , 18 .…”

Section: Introductionmentioning

confidence: 99%

Simultaneous evaluation of intermittency effects, replica symmetry breaking and modes dynamics correlations in a Nd:YAG random laser

Coronel

Silva-Neto

Moura

et al. 2022

Sci Rep

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Random lasers (RLs) are remarkable experimental platforms to advance the understanding of complex systems phenomena, such as the replica-symmetry-breaking (RSB) spin glass phase, dynamics modes correlations, and turbulence. Here we study these three phenomena jointly in a Nd:YAG based RL synthesized for the first time using a spray pyrolysis method. We propose a couple of modified Pearson correlation coefficients that are simultaneously sensitive to the emergence and fading out of photonic intermittency turbulent-like effects, dynamics evolution of modes correlations, and onset of RSB behavior. Our results show how intertwined these phenomena are in RLs, and suggest that they might share some common underlying mechanisms, possibly approached in future theoretical models under a unified treatment.

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Random laser emission from neodymium doped zinc tellurite glass-powder presenting luminescence concentration quenching

Cited by 24 publications

References 23 publications

Random lasing and replica symmetry breaking in GeO2-PbO-MgO glass–ceramics doped with neodymium

Random lasing and replica symmetry breaking in GeO2-PbO-MgO glass–ceramics doped with neodymium

Red and near-infrared emitting phosphors based on Eu³⁺- or Nd³⁺-doped lanthanum niobates prepared by the sol–gel route

Simultaneous evaluation of intermittency effects, replica symmetry breaking and modes dynamics correlations in a Nd:YAG random laser

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Random laser emission from neodymium doped zinc tellurite glass-powder presenting luminescence concentration quenching

Cited by 24 publications

References 23 publications

Random lasing and replica symmetry breaking in GeO2-PbO-MgO glass–ceramics doped with neodymium

Random lasing and replica symmetry breaking in GeO2-PbO-MgO glass–ceramics doped with neodymium

Red and near-infrared emitting phosphors based on Eu3+- or Nd3+-doped lanthanum niobates prepared by the sol–gel route

Simultaneous evaluation of intermittency effects, replica symmetry breaking and modes dynamics correlations in a Nd:YAG random laser

Contact Info

Product

Resources

About

Red and near-infrared emitting phosphors based on Eu³⁺- or Nd³⁺-doped lanthanum niobates prepared by the sol–gel route