Output power and efficiencies of slab laser systems

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Abstract
Starting with the known relations for rod systems, the efficiencies and the output power of a slab system are derived as a function of the small‐signal gain and the resonator losses. Taking into account the beam overlap and beam enlargement it turns out that higher extraction efficiencies can be achieved in slab systems compared to equivalent rod systems. Under the assumption of the same excitation power and equal losses in both systems this results in a higher output power and a lower lasing threshold in slabs. These advantages can be realized provided that the pumping arrangement of slab systems is optimized similar to rod systems.

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