z-logo
open-access-imgOpen Access
MHz-repetition rate fs-laser-inscribed crystalline waveguide lasers inscribed at 100 mm/s
Author(s) -
Kore Hasse,
Christian Kränkel
Publication year - 2020
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.381443
Subject(s) - inscribed figure , optics , laser , materials science , lasing threshold , waveguide , optoelectronics , laser power scaling , slope efficiency , fiber laser , physics , geometry , mathematics
We report on fast direct laser inscription of waveguide laser structures in a crystal. For the first time, a 1 MHz-repetition rate fs-laser was utilized for this purpose. We inscribed and characterized more than 100 tracks with different inscription parameters in Yb:CALGO crystals. Waveguide lasing with slope efficiencies of up to 57% at a maximum output power of 3.4 W and more than 55% of optical efficiency was obtained under pumping with an optically pumped semiconductor laser (OPSL), even in waveguides fabricated at record-high inscription velocities of 100 mm/s. Such laser performance is similar to previously reported waveguide lasers inscribed at 1 kHz repetition rate and paves the way toward an industrial fabrication of such waveguides.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.
Having issues? You can contact us here