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Raman lasers based on potassium gadolinium tungstate and lead tungstate crystals pumped by a ≈120 ps Nd: YAG laser at 1.064 μm were developed. High reflection mirrors for the Stokes wavelength have been used to generate near infrared and eye safe spectral region of 1.15-1.32 μm. Second harmonic generation of the generated Raman lasers was observed. Eifficient multiple Stokes and anti Stokes picosecond generation in 64 crystals have been shown to exhibit stimulated Raman scattering on about 700 lines covering the whole visible and near infrared spectrum. All stimulated Raman scattering (SRS) wavelengths in the visible and near infrared spectrum are identified and attributed to the SRS active vibration modes of these crystals.
Raman lasers based on potassium gadolinium tungstate and lead tungstate crystals pumped by a ≈120 ps Nd: YAG laser at 1.064 μm were developed. High reflection mirrors for the Stokes wavelength have been used to generate near infrared and eye safe spectral region of 1.15-1.32 Second harmonic generation of the generated Raman lasers was observed. Eifficient multiple Stokes and anti Stokes picosecond generation in 64 crystals have been shown to exhibit stimulated Raman scattering on about 700 lines covering the whole visible and near infrared spectrum. All stimulated Raman scattering ( SRS) wavelengths in the visible and near infrared spectra are identified and attributed to the SRS active vibration modes of these crystals.