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

  • Identification data

    Identifier: PC:2991
    Handle: https://hdl.handle.net/20.500.11797/PC2991
    Authors:
    Martínez, J.Ródenas, A.Fernández, T.Vázquez de Aldana, J.R.Thomson, R.R.Aguiló, M.Kar, A.K.Solís, J.Díaz, F.
    Abstract:
    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

  • Others:

    Author, as appears in the article.: Martínez, J.; Ródenas, A.; Fernández, T.; Vázquez de Aldana, J.R.; Thomson, R.R.; Aguiló, M.; Kar, A.K.; Solís, J.; Díaz, F.
    Department: Química Física i Inorgànica
    URV's Author/s: Martínez, J.; Ródenas, A.; Fernández, T.; Vázquez de Aldana, J.R.; Thomson, R.R.; Aguiló, M.; Kar, A.K.; Solís, J.; Díaz, F.
    Abstract: 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
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0146-9592
    Last page: 5821
    Journal volume: 40
    Papper version: info:eu-repo/semantics/acceptedVersion
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2015
    First page: 5818