All solid-state angular momentum tunable laser device with stable pulse energy

The invention relates to an all solid-state angular momentum tunable laser device with stable pulse energy. The all solid-state angular momentum tunable laser device comprises a pumping source, an optical coupling system, a resonant cavity, a solid laser medium and a saturable absorber; the pumping source is a semiconductor laser diode; the solid laser medium is a doped laser material Nd: YAG or Nd: YVO4; the saturable absorber is a Cr: YAG or GaAs crystal; and the resonant cavity consists of an input mirror and an output mirror or consists of a coating film on the incident surface of the solid laser medium and a coating film on an emergent surface of the saturable absorber. Laser output by the laser device provided by the invention is pulse laser with fixed energy and further has an optical angular momentum, and the continuous change of the angular momentum can be realized through altering the power of pump light. The laser device provided by the invention can be used for aspects such as optical communication, cold atom trapping, dynamic optical storage, and quantum computation. The tunable laser device is low in cost, small in size, stable in energy, high in peak power and tunable in the angular momentum and is flexible to adjust.