Thermally Resilient Planar Waveguides in Novel nc-YSZ Transparent Ceramic by fs Laser Pulses

We report on thermally resilient planar waveguides fabricated on nc-YSZ by direct fs-laser inscription in transparent nc-yttria stabilized zirconia (nc-YSZ) polycrystalline ceramic. The waveguides consisted of rectangular sections (4.5 × 2 mm 2 ) on the surface of the sample. Optical characterizatio...

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Bibliographic Details
Published inFrontiers in physics Vol. 9
Main Authors Castillo, Gabriel R., Burshtein, Cecilia, Uahengo, Gottlieb, Penilla, Elías H., Esqueda-Barrón, Yasmín, Martinez-Gil, M., de la Cruz, Wencel, Garay, Javier E., Camacho-López, Santiago
Format Journal Article
LanguageEnglish
Published Frontiers Media S.A 06.10.2021
Subjects
biocompatible materials
femtosecond lasers
laser materials processing
optical waveguides
yttria stabilized zirconia ceramic
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Summary:We report on thermally resilient planar waveguides fabricated on nc-YSZ by direct fs-laser inscription in transparent nc-yttria stabilized zirconia (nc-YSZ) polycrystalline ceramic. The waveguides consisted of rectangular sections (4.5 × 2 mm 2 ) on the surface of the sample. Optical characterization at 633 and 810 nm was performed. We estimate a laser-induced refractive index contrast of 10 –4 . Post-waveguide-fabrication thermal annealing treatments at 750°C for 24 h were carried out to test the resilience of the waveguides and to further reduce the waveguide losses. Both micro-Raman spectroscopy and XPS characterization revealed unmodified lattice and steady chemical features, which are consistent with the waveguide thermal resilience. Our results suggest a promising potential use of nc-YSZ in harsh and high temperature demanding photonic environments.
ISSN:2296-424X
2296-424X
DOI:10.3389/fphy.2021.767855