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The improvement of output characteristics on Tm3+-doped all-fibre laser operating at 1908 nm

  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate a comparative analysis of directly diode-pumped Tm3+-doped all-fibre laser operating at 1908 nm with different structure at fibre end facets. The feedback arising from parasitic oscillations and amplified spontaneous emission can be suppressed by coating an anti-reflection on the forward end facet and cleaving an angle on the backward end facet. 44.1 W laser power on forward end at the pumped power of 120 W was achieved. The forward laser slope efficiency was 39.3%, corresponding to the backward laser slope efficiency of 3.0%. The beam quality factor of M2 was 1.4.

Original languageEnglish
Pages (from-to)1298-1301
Number of pages4
JournalJournal of Modern Optics
Volume64
Issue number13
DOIs
StatePublished - 20 Jul 2017

Keywords

  • All-fibre laser
  • Tm-doped
  • continuous wave
  • end facets

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