Abstract
We report on a compact amplifier emitting a maximum pulse energy of . By amplifying a passively Q-switched oscillator () a good beam quality of was achieved. The amplifier is diode pumped by an 8 bar diode stack of power and a nonimaging optic. This optic homogenizes the pump light and transfers it into a diameter core doped rod with a centrally neodymium doped region of and a samarium doped YAG cladding. We show that this cladding reduces parasitic effects in the laser rod compared to an undoped YAG cladding. Finally, we compare the compact amplifier with an amplifier, which is mode selectively pumped by a fiber coupled pump diode.
© 2010 Optical Society of America
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