We report numerical and experimental results obtained with an optical setup that simulates
the heating and cooling processes expected in a multi-slab high-average-power laser head.
We have tested the performance of an adaptive optics system consisting of a photo-
controlled deformable mirror (PCDM) and a Shack–Hartmann wavefront sensor for the
effective correction of the generated wavefront aberrations. The performance of the adaptive
optics system is characterized for different layouts of the actuator array and for different …

We incorrectly calculated the Strehl ratio in Table 1 in our paper published in [Appl. Opt. 53,
3255–3261 (2014) 10.1364/AO. 53.003255 APOPAI1559-128X]. Here, we provide the
correct values of the Strehl ratio. It should be mentioned that this does not change or affect
any other results, techniques, or conclusions presented in the published paper.