Abstract
We report on an pumped passively mode-locked oscillator providing of average power at a repetition rate of with pulse duration, further amplified to in a 52% optical efficiency single-pass amplifier stage, maintaining beam quality at . Frequency doubling in a crystal generated up to at , while a third harmonic power of was achieved in a nonoptimized tripling configuration, corresponding to 80% and 33% conversion efficiency.
© 2007 Optical Society of America
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