1 mJ pulse bursts from a Yb-doped fiber amplifier
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Kalaycıoğlu, H., Eldeniz, Y. B., Akçaalan, Ö., Yavaş, S., Gürel, K., Efe, M., & Ilday, F. Ö. (2012). 1 mJ pulse bursts from a Yb-doped fiber amplifier. Optics letters, 37(13), 2586-2588.
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/13175
We demonstrate burst-mode operation of a polarization-maintaining Yb-doped fiber amplifier capable of generating 60 mu J pulses within bursts of 11 pulses with extremely uniform energy distribution facilitated by a novel feedback mechanism shaping the seed of the burst-mode amplifier. The burst energy can be scaled up to 1 mJ, comprising 25 pulses with 40 mu J average individual energy. The amplifier is synchronously pulse pumped to minimize amplified spontaneous emission between the bursts. Pulse propagation is entirely in fiber and fiber-integrated components until the grating compressor, which allows for highly robust operation. The burst repetition rate is set to 1 kHz and spacing between individual pulses is 10 ns. The 40 mu J pulses are externally compressible to a full width at half-maximum of 600 fs. However, due to the substantial pedestal of the compressed pulses, the effective pulse duration is longer, estimated to be 1.2 ps. (C) 2012 Optical Society of America