Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 104, Issue 1, Pages 301-309Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-010-6135-9
Keywords
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Funding
- Spanish Ministerio de Ciencia y Tecnologia [MAT2007-64686, MAT2009-06580-E/MAT, FIS2009-09522, CSD2007-00013]
- Consejeria de Educacion de la Comunidad de Madrid, Universidad Autonoma de Madrid (UAM-CAM) [CCG08-UAM/MAT-4434, PHAMA P2009/MAT1756]
- CEAL-Banco Santander
- Brazilian CAPES
- Brazilian CNPq
- Chinese NSFC [10925524]
- Spanish Ministerio de Ciencia and Argentinean CONICET [PIP 11220090100394]
- UK Engineering and Physical Sciences Research Council (EPSRC) [EP/G030227/1, EP/D047269/1]
- EPSRC [EP/E016863/1, EP/I005773/1, EP/D047269/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/D047269/1, EP/I005773/1, EP/E016863/1] Funding Source: researchfish
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We report the improvement of ultrafast laser written optical waveguides in Yb:YAG ceramics by tailoring the presence of heat accumulation effects. From a combination of ytterbium micro-luminescence and micro-Raman structural analysis, maps of lattice defects and stress fields have been obtained. We show how laser annealing can strongly reduce the concentration of defects and also reduce compressive stress, leading to an effective 50% reduction in the propagation losses and to more extended and symmetric propagation modes.
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