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Research on stimulated Brillouin scattering suppression based on multi-frequency phase modulation

  • Yingfan Liu*
  • , Zhiwei Lu
  • , Yongkang Dong
  • , Qiang Li
  • *Corresponding author for this work
  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

The method of generating equal-amplitude spectral lines by multi-frequency phase modulation is used in stimulated Brillouin scattering (SBS) suppression. The spectra of three, five, seven, and eleven equal-amplitude spectral lines are obtained in experiment with flatnesses less than 0.3 dB. Theoretical research on SBS suppression shows that the threshold power after modulation is in reverse proportion to the maximum square of amplitude moduli of fundamental frequency and the nth harmonic wave. The threshold powers of three, five, seven, and eleven equal-amplitude spectral lines are improved by 5.21, 8.36, 9.39, and 10.76 dB, respectively.

Original languageEnglish
Pages (from-to)29-31
Number of pages3
JournalChinese Optics Letters
Volume7
Issue number1
DOIs
StatePublished - Jan 2009

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