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
Link to the original source: https://www.osapublishing.org/ol/abstract.cfm?uri=ol-40-24-5818
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Article's DOI: 10.1364/OL.40.005818
Entity: Universitat Rovira i Virgili
Journal publication year: 2015
First page: 5818