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Proceedings Paper

Beam characterization of a scalable 220 W-ceramic Nd:YAG laser
Author(s): E. Favilla; E. Sani; M. Ciofini; A. Lapucci
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Paper 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.

Paper Details

Date Published: 26 April 2007
PDF: 8 pages
Proc. SPIE 6346, XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 63460W (26 April 2007); doi: 10.1117/12.737391
Show Author Affiliations
E. Favilla, INOA-CNR National Institute of Applied Optics (Italy)
E. Sani, INOA-CNR National Institute of Applied Optics (Italy)
M. Ciofini, INOA-CNR National Institute of Applied Optics (Italy)
A. Lapucci, INOA-CNR National Institute of Applied Optics (Italy)


Published in SPIE Proceedings Vol. 6346:
XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers

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