Blu-ray-pumped praseodymium-doped yttrium lithium fluoride all-solid-state 670nm red laser

The invention relates to all-solid-state lasers, in particular to a blu-ray-pumped praseodymium-doped yttrium lithium fluoride all-solid-state 670nm red laser. The blu-ray-pumped praseodymium-doped yttrium lithium fluoride all-solid-state 670nm red laser comprises an all-solid-state 444nm InGaN blu-ray semiconductor laser, a focusing lens, a collimating lens, a planar input cavity mirror, a Pr:YLF laser crystal, a Fabry-Perot etalon and a concave output cavity mirror, wherein the focusing lens is arranged at an output end of the all-solid-state 444nm InGaN blu-ray semiconductor laser, an input end of the collimating lens is positioned at an output end of the focusing lens, the planar input cavity mirror is arranged at an output end of the collimating lens and serves as an input cavity mirror of the laser, the input end face of the Pr:YLF laser crystal is connected with the planar input cavity mirror, the Fabry-Perot etalon is arranged behind the Pr:YLF laser crystal and serves as an adjustment tool for guaran