Laser mode: multi-mode Laser pulse output: single-pulse, dual-pulse and three-pulse Time characteristics of the laser pulse output a) Laser pulse width: 4.5ns ± 10% b) Duration of laser pulse sequence: dual-pulse≤30µs; three-pulse≤50µs c) Maximum emission repetition rate of laser pulse sequence: 2.5Hz±20% Laser output energy (in front of eyeball) a) Maximum output energy of single-pulse: 11mJ±20% b) Maximum output energy of dual-pulse: 19mJ±20% c) Maximum output energy of three-pulse: 28mJ±20% d) Output energy adjustment: 100%～6% 7-grade adjustable, the allowable tolerance between actual output and preset value is ±20% Laser output energy reproducibility: RP ≤±10% Laser beam convergence angle: 18°±20% Focal plane spot diameter: 30µm±20%