RT Journal Article
T1 Dual regimes of ion migration in high repetition rate femtosecond laser inscribed waveguides
A1 Teddy Fernández, Toney
A1 Sotillo Buzarra, Belén
A1 del Hoyo, Jesús
A1 Valles, Juan Antonio
A1 Martínez Vázquez, Rebeca
A1 Fernández Sánchez, Paloma
A1 Solis, Javier
AB Ion migration in high repetition rate femtosecond laser inscribed waveguides is currently being reported in different optical glasses. For the first time, we discuss and experimentally demonstrate the presence of two regimes of ion migration found in laser written waveguides. Regime-I corresponds to the initial waveguide formation mainly via light element migration (in our case atomic weight < 31 u), whereas regime-II majorly corresponds to the movement of heavy elements. This behavior brings attention to a problem which has never been analyzed before and that affects the laser written active waveguides, in which active ions migrate changing their local spectroscopic properties. The migration of active ions may in fact detune the predesigned optimal values of active photonic devices. This letter experimentally demonstrate this problem and provides solutions to avert it.
PB IEEE (Institute of Electrical and Electronics Engineers)
SN 1041-1135
YR 2015
FD 2015-05-15
LK https://hdl.handle.net/20.500.14352/24035
UL https://hdl.handle.net/20.500.14352/24035
LA eng
NO © IEEE (Institute of Electrical and Electronics Engineers).Work partially supported by the Spanish Ministry of Economy & Competitiveness (MINECO, TEC2011-22422, MAT2012-31959), J.H. & T.T.F. acknowledge funding from the JAE CSIC Program (co-funded by the European Social Fund). B Sotillo acknowledges her funding in the frame of CSD2009-00013 (MINECO).
NO Ministerio de Economía y Competitividad (MINECO)/FEDER
NO JAE CSIC Program through the European Social Fund
NO Consejo Superior de Investigaciones Cientñificas (CSIC)
DS Docta Complutense
RD 9 abr 2025