Beam characterization of a scalable 220 W-ceramic Nd:YAG laser

E. Favilla; E. Sani; M. Ciofini; A. Lapucci

doi:10.1117/12.737391

26 April 2007 Beam characterization of a scalable 220 W-ceramic Nd:YAG laser

E. Favilla, E. Sani, M. Ciofini, A. Lapucci

Proceedings Volume 6346, XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 63460W (2007) https://doi.org/10.1117/12.737391
Event: XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2006, Gmunden, Austria

Abstract

We describe the analysis of the propagation properties of the beam extracted from a slab-shaped ceramic Nd:YAG laser. The YAG slab is face pumped by two horizontal arrays of quasi-CW diode bars delivering 1200 W in 150 &mgr;sec pulses up to a 15% duty cycle. The use of a hybrid stable-unstable resonator enables a maximum extraction of more than 215 W at 28% slope efficiency level, with a beam parameter product smaller than 3mm.mrad in both transverse directions. M² values have been characterized as a function of the diode pumping current. Furthermore, by an analysis of the M² trend as a function of the knife-edge clipping levels, we have been able to infer the modal composition of the beam in both the stable and unstable direction.

Citation Download Citation

E. Favilla, E. Sani, M. Ciofini, and A. Lapucci "Beam characterization of a scalable 220 W-ceramic Nd:YAG laser", Proc. SPIE 6346, XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 63460W (26 April 2007); https://doi.org/10.1117/12.737391

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