7 January 2015 Precise curvature measurement of Yb:YAG thin disk
Author Affiliations +
Proceedings Volume 9442, Optics and Measurement Conference 2014; 94420X (2015) https://doi.org/10.1117/12.2176185
Event: Optics and Measurement Conference 2014, 2014, Liberec, Czech Republic
We are developing an Yb:YAG thin disk regenerative amplifier operating at 1 kHz repetition rate which should deliver output of 100 W of average power which corresponds to the pulse energy of 100 mJ. In order to achieve such high output energy, large size mode matching on a thin-disk is required to avoid optical damage but on the other hand, larger mode area is more susceptible to the influence of optical phase distortions (OPD’s) thus limits achievable pulse energy and beam quality. We developed a compact setup allowing precise measurement of the thin-disk deformations by implementation of a Hartmann-Shack wavefront sensor and a single mode probe laser diode. In comparison to the interferometric measurement methods, our approach brings a number of advantages like simplicity of alignment, compactness and robustness, at the same time keeping the high precision of measurement in a range of few nanometers.
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Jiri Muzik, Jiri Muzik, Michal Chyla, Michal Chyla, Siva S. Nagisetty, Siva S. Nagisetty, Taisuke Miura, Taisuke Miura, Klaus Mann, Klaus Mann, Akira Endo, Akira Endo, Tomas Mocek, Tomas Mocek, "Precise curvature measurement of Yb:YAG thin disk", Proc. SPIE 9442, Optics and Measurement Conference 2014, 94420X (7 January 2015); doi: 10.1117/12.2176185; https://doi.org/10.1117/12.2176185

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