Random lasers based on tellurite and germanate glasses and glass-ceramics doped with rare-earth Ions
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Micromachines
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Random lasers (RLs) based on glasses and glass-ceramics doped with rareearth
ions (REI) deserve great attention because of their specific physical properties such
as large thermal stability, possibility to operate at high intensities, optical wavelength
tunability, and prospects to operate Fiber-RLs, among other characteristics of interest for
photonic applications. In this article, we present a brief review of experiments with RLs
based on tellurite and germanate glasses and glass-ceramics doped with neodymium
(Nd3+), erbium (Er3+), and ytterbium (Yb3+) ions. The glass samples were fabricated using
the melt-quenching technique followed by controlled crystallization to achieve the glassceramics.
Afterwards, the samples were crushed to obtain the powder samples for the RLs
experiments. The experiments demonstrated RLs emissions at various wavelengths, with
feedback mechanisms due to light scattering at grain/air and crystalline/glass interfaces.
The phenomenon of replica symmetry breaking was verified through statistical analysis of
the RLs intensity fluctuations, indicating a photonic phase-transition (corresponding to the
RL threshold) analogous to the paramagnetic-to-spin glass transition in magnetic materials.
The various results reported here highlight the potential of glasses and glass-ceramics
for the development of RLs with improved performance in terms of reduction of laser
threshold and large lifetime of the active media in comparison with organic materials.
Como referenciar
SILVA, DAVINSON M. da; CAMARA, JOSIVANIR G.; WETTER, NIKLAUS U.; DIPOLD, JESSICA; KASSAB, LUCIANA R.P.; ARAUJO, CID B. de. Random lasers based on tellurite and germanate glasses and glass-ceramics doped with rare-earth Ions. Micromachines, v. 16, n. 5, p. 1-20, 2025. DOI: 10.3390/mi16050550. Disponível em: https://repositorio.ipen.br/handle/123456789/49353. Acesso em: 27 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.