Abstract

We report on a compactly packaged Yb-doped fiber-based laser architecture featuring an actively pulse controlled, single-longitudinal-mode seeder and multistage amplifier chain terminated by a “folded” rod-type photonic crystal fiber. In this laser source, stimulated Brillouin scattering (SBS) is the power-limiting factor, but is managed by phase modulating the seeder with a pseudo-random noise signal. Pulse energy/peak power of 2mJ/1.5MW at 10 kHz repetition rate are thus obtained within 1.55ns pulses of peak spectral brightness >20kWcm2sr1Hz1.

© 2013 Optical Society of America

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