CIOP 05384
CENTRO DE INVESTIGACIONES OPTICAS
Unidad Ejecutora - UE
artículos
Título:
Ultrafast laser writing of optical waveguides in ceramic Yb:YAG: a study of thermal and nonthermal regimes
Autor/es:
A. BENAYAS; W.F. SILVA ·; A. RÓDENAS; C. JACINTO; J.R. VÁZQUEZ DE ALDANA, ; F. CHEN; Y. TAN, ; R.R.THOMSOM; N.D. PSAILA; D.T. REID; G.A. TORCHIA; A.K. KAR; D. JAQUE
Revista:
APPLIED PHYSICS. A - MATERIALS SCIENCE AND PROCESSING
Editorial:
SPRINGER
Referencias:
Año: 2011 vol. 104 p. 301 - 309
ISSN:
0947-8396
Resumen:
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.
