Multimode diode-pumped graded-index fiber Raman laser with pulsed generation in all-fiber scheme

Alexey G. Kuznetsov, S. I. Kablukov, S. A. Babin

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

We report on a pulsed regime of Raman laser with all-fiber cavity scheme based on a multimode graded-index fiber directly pumped by a CW multimode laser diode. The cavity was performed with 3.7 km 62.5/125 MM graded-index fiber with two FBGs on the both sides of it. Intra-cavity acousto-optic modulator pigtailed with 10/125 fiber allowed to obtain mode locking regime. At 27.19-kHz repetition rate corresponding to the laser cavity round-trip frequency (corresponding to mode-locking regime), stable nanosecond pulses with 6.3 W peak power have been observed at the 1st (1018 nm) Stokes order. The beam quality of generated pulses is greatly improved as compared to that for pump diode (M2<20) reaching M2=2.86 for the 1st Stokes and M2=2.08 for the 2nd Stokes beams.

Original languageEnglish
Title of host publicationAdvanced Lasers, High-Power Lasers, and Applications XII
EditorsShibin Jiang, Ingmar Hartl, Jun Liu
PublisherSPIE
ISBN (Electronic)9781510646292
DOIs
Publication statusPublished - 2021
EventAdvanced Lasers, High-Power Lasers, and Applications XII 2021 - Nantong, China
Duration: 10 Oct 202112 Oct 2021

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11890
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceAdvanced Lasers, High-Power Lasers, and Applications XII 2021
CountryChina
CityNantong
Period10.10.202112.10.2021

Keywords

  • Beam clean-up
  • Diode pumping
  • Fiber laser
  • Graded-index fiber
  • Raman laser

OECD FOS+WOS

  • 1.03 PHYSICAL SCIENCES AND ASTRONOMY

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