Sunlight fiber beam pumping solid laser

The invention provides a sunlight fiber beam pumping solid laser. The sunlight fiber beam pumping solid laser mainly comprises a sun (1), a collecting optical system (2), a coupling optical system (3), fibers (4), beam combiners (5), a condensation cavity (6), a laser medium (7), a high reflector (8), a refrigerating system (9), an output coupling mirror (10) and the like, wherein light emitted by the sun (1) is collected and gathered by the collecting optical system (2); the coupling optical system (3) couples the sunlight collected by the optical system (2) to the fibers (4) for transmission; multiple groups of fibers (4) are combined through the beam combiners (5); the sunlight output by a plurality of beam combiners (5) is coupled into the condensation cavity (6) respectively for exciting the laser medium (7); the high reflector (8), the laser medium (7) and the output mirror (10) form a resonant cavity of the sunlight fiber beam pumping solid laser; after the light generated by the laser medium (7) due to laser radiation overcomes the resonant cavity loss, the light oscillates to and fro between the high reflector (8) and the output mirror (10) and is finally output from the output mirror (10); and the refrigerating system (9) leads out the waste heat generated by the laser medium (7), the incident ends of the fibers (4), the output ends of the beam combiners (5) and the condenser (6) by liquid circulation.