Laser emission circuit and laser

The utility model relates to the technical field of laser circuits, and discloses a laser emission circuit and a laser, an energy conversion unit converts energy of a signal of a power supply and then charges an energy storage unit, a clamping unit is arranged between the energy conversion unit and the input end of a first switch tube of an emission unit, and after energy conversion of the energy conversion unit is finished, the clamping unit is connected with the clamping unit; the clamping unit is used for charging a stray capacitor in a first switch tube of the transmitting unit and clamping a signal flowing to the energy storage unit from the energy conversion unit, so that the voltage difference between the positive electrode and the negative electrode of the laser diode is far smaller than the break-over voltage of the laser diode, the laser diode is prevented from emitting light in unexpected time, and the service life of the laser diode is prolonged. The normal work of each module is guaranteed, the q