Waveguides fabrication by femtosecond laser in Tb3+/Yb3+ doped CaLiBO glasses

Autor(es)

Santos, S. N. C. ; Almeida, G. F. B. ; Almeida, J. M. P. ; Hernandes, A. C. ; Mendonca, C. R.

• Tipo de documento: Artigo Científico
• Fonte: OPTICS AND LASER TECHNOLOGY; v. 140, p. 5-pg., 2021-02-26.

Resumo

Borate glasses present the ability to host various modifier ions and, therefore, are adaptable for a wide range of applications. Specifically, calcium-lithium tetraborate (CaLiBO) glasses doped with rare earths have been investigated for applications involving energy transfer processes. In this work, waveguides were inscribed by femtosecond laser microfabrication in CaLiBO glasses containing Tb3+ and Yb3+ ions, displaying emission in the green region. Single-mode guiding at 632.8 nm, with propagation losses of approximately 2.0 dB/cm, was ob- tained in 7.0-mm long waveguides with a diameter on the order of 2 mu m, produced in the glass bulk, at approximately 100 mu m below the sample surface. By coupling 488 nm light, the fabricated waveguide showed the capability of guiding the typical emission of Tb3+ ions. Such glasses containing rare earths could be suitable for the development of green light-emitting microdevices. (AU)

• Processo FAPESP: 18/11283-7 - Fotônica não linear: espectroscopia e processamento avançado de materiais
• Beneficiário: Cleber Renato Mendonça
• Modalidade de apoio: Auxílio à Pesquisa - Temático