Gain-switched laser diode seeded Yb-doped fiber amplifier delivering 11-ps pulses at repetition rates up to 40-MHz

Manuel Ryser; Martin Neff; Soenke Pilz; Andreas Burn; Valerio Romano

doi:10.1117/12.908045

15 February 2012 Gain-switched laser diode seeded Yb-doped fiber amplifier delivering 11-ps pulses at repetition rates up to 40-MHz

Manuel Ryser, Martin Neff, Soenke Pilz, Andreas Burn, Valerio Romano

Author Affiliations +

Proceedings Volume 8237, Fiber Lasers IX: Technology, Systems, and Applications; 82373I (2012) https://doi.org/10.1117/12.908045
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

Here, we demonstrate all-fiber direct amplification of 11 picosecond pulses from a gain-switched laser diode at 1063 nm. The diode was driven at a repetition rate of 40 MHz and delivered 13 μW of fiber-coupled average output power. For the low output pulse energy of 0.33 pJ we have designed a multi-stage core pumped preamplifier based on single clad Yb-doped fibers in order to keep the contribution of undesired amplified spontaneous emission as low as possible and to minimize temporal and spectral broadening. After the preamplifier we reduced the 40 MHz repetition rate to 1 MHz using a fiber coupled pulse-picker. The final amplification was done with a cladding pumped Yb-doped large mode area fiber and a subsequent Yb-doped rod-type fiber. With our setup we achieved amplification of 72 dBs to an output pulse energy of 5.7 μJ, pulse duration of 11 ps and peak power of >0.6 MW.

Citation Download Citation

Manuel Ryser, Martin Neff, Soenke Pilz, Andreas Burn, and Valerio Romano "Gain-switched laser diode seeded Yb-doped fiber amplifier delivering 11-ps pulses at repetition rates up to 40-MHz", Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 82373I (15 February 2012); https://doi.org/10.1117/12.908045

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