976 nm all-fiber Raman laser with high beam quality at multimode laser diode pumping

A. G. Kuznetsov, S. I. Kablukov, A. A. Wolf, I. N. Nemov, V. A. Tyrtyshnyy, D. V. Myasnikov, S. A. Babin

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

A 976 nm all-fiber Raman laser enabling high beam quality at direct multimode laser diode pumping with low beam quality (M 2 > 30) is demonstrated. The laser is performed in a 100/140 multimode graded-index fiber with special in-fiber Bragg gratings that secure generation of the Stokes beam with relatively good quality (M 2 2) and high slope efficiency of the pump-to-Stokes conversion (70%) at output powers of up to ∼50 W.

Original languageEnglish
Article number105102
Number of pages5
JournalLaser Physics Letters
Volume16
Issue number10
DOIs
Publication statusPublished - 25 Sep 2019

Keywords

  • diode pumping
  • fiber laser
  • graded-index fiber
  • Raman laser
  • CW
  • HIGH-POWER

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