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Efficiency Of Slab Laser Systems

1989 
We determined the excitation and extraction efficiencies of rod and slab laser systems as a function of the small signal gain and the resonator losses. Taking into account the beam overlap and beam enlargement in slabs, it turns out that higher extraction efficiencies can be achieved in slab systems compared to equivalent rod systems. This could be proven by experimental investigations made at a comparable Nd:YAG slab and a Nd:YAG rod system. Provided that the pumping arrangement of slab systems is optimized similar to rod systems, higher output powers and overall efficiencies should be possible in slab systems.
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