We present a highly efficient ring-cavity all-solid-state ${\mathrm{BaWO}}_4$ Raman laser generating at both the long-shift (${\nu }_1=925{\mathrm{cm}}^{-1}$) and short-shift (${\nu }_2=332{\mathrm{cm}}^{-1}$) Raman lines under external picosecond synchronous pumping at the wavelength of 1063 nm. Very high slope efficiencies and output pulse energies of 68.8% and 103 nJ at the ${\nu }_1$-shifted Stokes wavelength of 1179 nm, and 38.6% and 53 nJ at the (${\nu }_1+{\nu }_2$)-shifted Stokes wavelength of 1227 nm have been achieved. Self-mode locking of the (${\nu }_1+{\nu }_2$)-shifted Stokes field under intracavity pumping by the ${\nu }_1$-shifted Stokes field allowed to realize 12-fold shortening of the 1227 nm radiation pulse down to 3 ps close to the shorter dephasing time of the ${\nu }_2$ Raman line at the output pulse peak power 1.5 times higher than the pump peak power.

中文翻译：

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在BaWO ₄晶体中的单个和组合拉曼线上的1179 nm和1227 nm的高效皮秒全固态拉曼激光

我们提出了一种高效的环形腔全固态 ${\mathrm{WO}}_4$ 拉曼激光在长距离（${\nu }_{\mathrm{1个}}=925{\mathrm{厘米}}^{-\mathrm{1个}}$）和短移（${\nu }_{\mathrm{2个}}=332{\mathrm{厘米}}^{-\mathrm{1个}}$）在外部皮秒同步泵浦下的拉曼线，波长为1063 nm。在这种情况下，非常高的斜率效率和68.8％的输出脉冲能量为103 nJ。${\nu }_{\mathrm{1个}}$的斯托克斯位移波长为1179 nm，在（${\nu }_{\mathrm{1个}}+{\nu }_{\mathrm{2个}}$），已实现1227 nm的斯托克斯位移波长。（${\nu }_{\mathrm{1个}}+{\nu }_{\mathrm{2个}}$）在腔内泵送作用下移动了斯托克斯场 ${\nu }_{\mathrm{1个}}$位移的斯托克斯场允许将1227 nm辐射脉冲缩短12倍，降低至3 ps，接近于短相移时间。 ${\nu }_{\mathrm{2个}}$ 拉曼线处的输出脉冲峰值功率比泵浦峰值功率高1.5倍。