All solid-state laser light source device

An all-solid-state laser light source device, comprising:

• a semiconductor pump laser, a coupling optical fiber, a coupling lens group, and a resonant cavity, wherein the coupling optical fiber, the coupling lens group, and the resonant cavity are arranged in sequence along an optical path of laser;
• wherein the resonant cavity is provided with an anisotropic laser crystal therein, an absorption spectrum of the anisotropic laser crystal comprises a π polarization direction absorption spectrum and a σ polarization direction absorption spectrum, wherein the π polarization direction absorption spectrum and the σ polarization direction absorption spectrum have a peak pump region, and a left-wing pump region or a right-wing pump region located on both sides of the peak pump region, and a pump light wavelength λ outputted by the semiconductor pump laser is located in the left-wing pump region or the right-wing pump region.