TY  - JOUR 
AU  - Kifle, Esrom
AU  - Loiko, Pavel
AU  - Romero Vázquez, Carolina
AU  - Vázquez de Aldana, Javier R.
AU  - Ródenas, Airan
AU  - Zakharov, Viktor
AU  - Veniaminov, Andrey
AU  - Aguiló, Magdalena
AU  - Díaz, Francesc
AU  - Griebner, Uwe
AU  - Petrov, Valentin
AU  - Mateos, Xavier
PY  - 2019
SN  - 0146-9592
UR  - http://hdl.handle.net/10366/147195
AB  - We report on efficient laser operation of the first holmium monoclinic double tungstate waveguide laser fabricated by femtosecond direct laser writing. A depressed-index buried channel waveguide with a 60 μm diameter circular cladding was inscribed in...
LA  - eng
KW  - Femtosecond laser writing
KW  - Femtosecond lasers
KW  - Fiber lasers
KW  - Laser operation
KW  - Negative refractive index
KW  - Waveguide lasers
TI  - Femtosecond-laser-written Ho:KGd(WO4)2 waveguide laser at 21  μm
DO  - 10.1364/OL.44.001738
T2  - Optics Letters
VL  - 44
M2  - 1738
ER  -