Photodiode laser power detection method and device

The invention relates to the field of laser power detection, in particular to a photodiode laser power detection method and device. The method is applied to a laser system and comprises the steps that a photodiode sampling circuit is controlled to conduct periodic sampling, representation data are obtained, and the representation data comprise representation PWM mode laser pulse energy, representation PWM mode laser pulse peak power and representation CW mode laser pulse peak power; according to the calibrated proportionality coefficient and the representation data, calculating to obtain the average laser power, determining the calibrated proportionality coefficient by the structure of the laser system, obtaining the average laser power corresponding to the preset power, and realizing the detection of the laser power of the laser; and monitoring the output power of the laser system in real time according to the preset power of the laser system and the laser average power difference value. 本发明涉及激光功率检测领域，具体而言，涉