Pump depletion in Raman lasing in a graded index multimode fibre

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We examine multimode diode laser pump depletion in a graded index multimode (MM) fibre Raman laser generating a high-quality Stokes beam. Spatial 'hole burning' in the transmitted pump beam is demonstrated. A balance model is constructed for interaction of the pump and Stokes waves in the MM Raman laser. Analytical formulas are derived and used in calculations demonstrating qualitative agreement with experimental data. The origin of the observed quantitative discrepancies is discussed.

Original languageEnglish
Pages (from-to)1091-1095
Number of pages5
JournalQuantum Electronics
Issue number12
Publication statusPublished - Dec 2020


  • balance model
  • fibre Bragg gratings
  • graded index multimode fibre
  • pump depletion effect
  • Raman lasing


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