Articles producció científica> Química Física i Inorgànica

3D laser-written silica glass step-index high-contrast waveguides for the 3.5 µm mid-infrared range

  • Dades identificatives

    Identificador: PC:2991
    Handle: https://hdl.handle.net/20.500.11797/PC2991
    Autors:
    Martínez, J.Ródenas, A.Fernández, T.Vázquez de Aldana, J.R.Thomson, R.R.Aguiló, M.Kar, A.K.Solís, J.Díaz, F.
    Resum:
    We report on the direct laser fabrication of step-index waveguides in fused silica substrates for operation in the 3.5 µm mid-infrared wavelength range. We demonstrate core-cladding index contrasts of 0.7%, enabling bends, low-loss coupling to commercial fluoride fibers, and propagation losses of 1.3 (6.5) dB/cm at 3.39 (3.68) µm, close to the intrinsic losses of the glass. We also report on the existence of three different laser modified SiO2 glass volumes, their different micro-Raman spectra, and their different temperature dependent populations of color centers, tentatively clarifying the SiO2 lattice changes which are related to the large index changes

  • Altres:

    Autor segons l'article: Martínez, J.; Ródenas, A.; Fernández, T.; Vázquez de Aldana, J.R.; Thomson, R.R.; Aguiló, M.; Kar, A.K.; Solís, J.; Díaz, F.
    Departament: Química Física i Inorgànica
    Autor/s de la URV: Martínez, J.; Ródenas, A.; Fernández, T.; Vázquez de Aldana, J.R.; Thomson, R.R.; Aguiló, M.; Kar, A.K.; Solís, J.; Díaz, F.
    Resum: We report on the direct laser fabrication of step-index waveguides in fused silica substrates for operation in the 3.5 µm mid-infrared wavelength range. We demonstrate core-cladding index contrasts of 0.7%, enabling bends, low-loss coupling to commercial fluoride fibers, and propagation losses of 1.3 (6.5) dB/cm at 3.39 (3.68) µm, close to the intrinsic losses of the glass. We also report on the existence of three different laser modified SiO2 glass volumes, their different micro-Raman spectra, and their different temperature dependent populations of color centers, tentatively clarifying the SiO2 lattice changes which are related to the large index changes
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0146-9592
    Pàgina final: 5821
    Volum de revista: 40
    Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2015
    Pàgina inicial: 5818