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100 kW peak power picosecond thulium-doped fiber amplifier system seeded by a gain-switched diode laser at 2 μm.

Authors
  • Heidt, A M
  • Li, Z
  • Sahu, J
  • Shardlow, P C
  • Becker, M
  • Rothhardt, M
  • Ibsen, M
  • Phelan, R
  • Kelly, B
  • Alam, S U
  • Richardson, D J
Type
Published Article
Journal
Optics Letters
Publisher
The Optical Society
Publication Date
May 15, 2013
Volume
38
Issue
10
Pages
1615–1617
Identifiers
DOI: 10.1364/OL.38.001615
PMID: 23938887
Source
Medline
License
Unknown

Abstract

We report on the generation of picosecond pulses at 2 μm directly from a gain-switched discrete-mode diode laser and their amplification in a multistage thulium-doped fiber amplifier chain. The system is capable of operating at repetition rates in the range of 2 MHz-1.5 GHz without change of configuration, delivering high-quality 33 ps pulses with up to 3.5 μJ energy and 100 kW peak power, as well as up to 18 W of average power. These results represent a major technological advance and a 1 order of magnitude increase in peak power and pulse energy compared to existing picosecond sources at 2 μm.

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