Laser radar system based on one-dimensional diffractive optical element DOE

The disclosure relates to a laser radar system based on a one-dimensional diffractive optical element DOE, and the system comprises a laser emitting device, the one-dimensional DOE, an optical rotating mirror and a laser receiving device, wherein the laser emitting device is used for emitting a laser beam; the one-dimensional DOE is used for splitting the laser beam into one-dimensional lattice laser beams with uniform light intensity distribution; the optical rotating mirror is capable of rotating around a rotation axis, receiving the one-dimensional lattice laser beams, and adjusting the direction of the one-dimensional lattice laser beams in the rotating process and reflecting the one-dimensional lattice laser beams to the target; and the echo of the one-dimensional lattice laser beamsafter diffuse reflection on the target returns to the optical rotating mirror, and is received by the laser receiving device after being reflected by the optical rotating mirror. By setting the one-dimensional DOE, the laser beam passing through the one-dimensional DOE can be split into one-dimensional lattice laser beams with uniform light intensity distribution, so that the light energy is distributed at the required point in a concentrated manner. In this way, the laser energy is effectively used to improve the scanning efficiency and detection range of the laser radar system.