Femtosecond-laser-written hexagonal cladding waveguide in Tm:KLu(WO4)2: μ-Raman study and laser operation

1. Kifle, E.
2. Loiko, P.
3. Mateos, X.
4. De Aldana, J.R.V.
5. Ródenas, A.
6. Griebner, U.
7. Petrov, V.
8. Aguiló, M.
9. Díaz, F.