TY - JOUR
T1 - Ultrafast laser writing of optical waveguides in ceramic Yb
T2 - YAG: a study of thermal and non-thermal regimes
AU - Benayas, A.
AU - Silva, W. F.
AU - Rodenas, A.
AU - Jacinto, C.
AU - Vazquez de Aldana, J.
AU - Chen, F.
AU - Tan, Y.
AU - Thomson, Robert
AU - Psaila, N. D.
AU - Reid, D. T.
AU - Torchia, G. A.
AU - Kar, A. K.
AU - Jaque, D.
PY - 2011/7
Y1 - 2011/7
N2 - 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. © 2010 Springer-Verlag.
AB - 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. © 2010 Springer-Verlag.
UR - http://www.scopus.com/inward/record.url?scp=78649326421&partnerID=8YFLogxK
U2 - 10.1007/s00339-010-6135-9
DO - 10.1007/s00339-010-6135-9
M3 - Article
SN - 0947-8396
VL - 104
SP - 301
EP - 309
JO - Applied Physics A: Materials Science and Processing
JF - Applied Physics A: Materials Science and Processing
IS - 1
ER -