Kinyaevskiy I O, Kovalev V I, Danilov P A, Smirnov N A, Kudryashov S I, Seleznev L V, Dunaeva E E, Ionin A A
Opt Lett. 2020 Apr 15;45(8):2160-2163. doi: 10.1364/OL.391550.
Transient stimulated Raman scattering (SRS) of 0.3 ps 515 nm laser pulses in ${\rm BaWO_4}$BaWO crystal was experimentally demonstrated with efficiency up to ${\sim}{20}% $∼20% for the Stokes component with a wavenumber of ${\sim}{925};{{\rm cm}^{ - 1}}$∼925cm in a simple single-pass geometry. This anomalous high efficiency was obtained due to the laser pulse self-phase modulation resulting in spectral broadening and seeding the SRS. The applicability of seed pulse production for a high-pressure sub-picosecond ${{\rm CO}_2}$CO laser amplifier via difference frequency generation in ${{\rm LiGaS}_2}$LiGaS crystal was numerically verified.
