Blue laser pumping source in cos form

The utility model discloses a blue laser pumping source in a cos form, which comprises a first light-emitting module and a second light-emitting module, polarization beam combination is carried out between the first light-emitting module and the second light-emitting module through a polarization beam combiner, the first light-emitting module comprises four cos modules and four first reflectors, and the second light-emitting module comprises four second reflectors and four second reflectors. According to the utility model, through the cooperation of the first light-emitting module, the second light-emitting module and the polarization beam combiner, the laser emitted by the first light-emitting module and the second light-emitting module can be subjected to polarization beam combination, and the first light-emitting module and the second light-emitting module are arranged in a crossed and staggered manner, so that the occupied area of the laser pumping source is effectively saved; when the cos module works, t