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.
- Nonlinear optics
- Raman effect
- ultrafast nonlinear optics
- stimulated Raman
Major, A., Aitchison, J. S., Smith, P. W. E., Langford, N., & Ferguson, A. I. (2005). 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. Optics Letters, 30(4), 421-423. https://doi.org/10.1364/OL.30.000421