Efficient Raman shifting of high-energy picosecond pulses into the eye-safe 1.5-µm spectral region by use of a KGd(WO4)_2 crystal

Arkady Major, J.S. Aitchison, Peter W.E. Smith, Nigel Langford, Allister I. Ferguson

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We report an efficient transient stimulated Raman conversion of high-energy picosecond pulses at 1350 nm into the eye-safe 1500-nm wavelength range by use of a KGd(WO4)_2 crystal. The conversion efficiency into either 1503- or 1537-nm radiation (767- or 901-cm^-1 Raman modes, respectively) is measured to be ~10% in a single-pass configuration. The transient Raman gain coefficient is found to be ~0.8 cm/GW. Simultaneous generation of multiple Raman lines is also observed.
Original languageEnglish
Pages (from-to)421-423
Number of pages2
JournalOptics Letters
Issue number4
Publication statusPublished - Feb 2005


  • Nonlinear optics
  • materials
  • Raman effect
  • ultrafast nonlinear optics
  • scattering
  • stimulated Raman
  • photonics

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