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Proceedings Paper

Gain-switched laser diode seeded Yb-doped fiber amplifier delivering 11-ps pulses at repetition rates up to 40-MHz
Author(s): Manuel Ryser; Martin Neff; Soenke Pilz; Andreas Burn; Valerio Romano
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Paper 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.

Paper Details

Date Published: 15 February 2012
PDF: 6 pages
Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 82373I (15 February 2012); doi: 10.1117/12.908045
Show Author Affiliations
Manuel Ryser, Univ. Bern (Switzerland)
Martin Neff, Univ. Bern (Switzerland)
Soenke Pilz, Univ. Bern (Switzerland)
Andreas Burn, Bern Univ. of Applied Sciences (Switzerland)
Valerio Romano, Univ. Bern (Switzerland)
Bern Univ. of Applied Sciences (Switzerland)

Published in SPIE Proceedings Vol. 8237:
Fiber Lasers IX: Technology, Systems, and Applications
Eric C. Honea; Sami T. Hendow, Editor(s)

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