Low-loss fs-laser-written surface waveguide lasers at > 2     µ m in monoclinic Tm^3+:MgWO_4

Surface channel waveguides (WGs) based on a half-ring (40 – 60- µ m-diameter) depressed-index cladding (type III) geometry are ...

Source: Optics Letters - July 13, 2020 Category: Physics Authors: Esrom Kifle Pavel Loiko Javier Rodr í guez V á zquez de Aldana Carolina Romero V í ctor Llamas Josep Maria Serres Magdalena Aguil ó Francesc D í az Lizhen Zhang Zhoubin Lin Haifeng Lin Ge Zhang Viktor Zakharov Andrey Veniaminov Valentin Petrov Uwe Gr Source Type: research