Precise measurements of the thermo-optical aberrations of an Yb:YAG thin-disk laser.
We report on interferometric measurements of the thermo-optical aberrations of the laser medium of an Yb:YAG thin-disk laser in pumped and cw lasing conditions at several pump-power levels with a mean repeatability of 5 nm. These measurements build the basis for future intracavity compensation of the aberrations with our deformable mirror in order to improve the fundamental-mode efficiency.
Muenster University of Applied Sciences, Photonics Laboratory, Steinfurt, Germany. perchermeier@fh‑muenster.de
Julian
J
Perchermeier
Ulrich
U
Wittrock