Laser system with adjustable polarization pumping power proportion

The invention provides a laser system with an adjustable polarization pumping power ratio. The laser system comprises a pumping module, a first half-wave plate, a polarization beam splitter, a first optical cavity, a second optical cavity and an adjusting device, the pumping module outputs pumping light; the first half-wave plate is arranged between the pumping module and the polarization light splitting device and is used for adjusting the polarization direction of the pumping light; the polarization beam splitter divides the incident pump light into P polarized light emitted in the horizontal direction and S polarized light emitted in the vertical direction; the P polarized light enters the first optical cavity, and the S polarized light enters the second optical cavity; the adjusting device adjusts the first half-wave plate to adjust the proportion of the P polarized light and the S polarized light so as to adjust the pumping power proportion of the two cavities, compared with the prior art, pumping of dif