Research On Optical Pressure Laser Power Measurement Technology Based On Multiple Reflection

High-power laser is widely used in the cutting,welding,and marking of manufacturing.With the advancement of high-power laser technology and the continuous expansion of manufacturing industrial production scale,real-time and precise measurement requirements for high-power laser power are getting greater.The existing calorimetric measurement method needs to absorb the original laser and the measurement response speed is slow,so it is difficult to achieve real-time measurement of high-power laser power.The sampling measurement method usually uses an optoelectronics diode,which has poor accuracy and anti-electromagnetic interference,and it is difficult to apply to actual industrial scenarios.The high-power laser power measurement system based on the principle of optical pressure can accurately monitor the laser power in real time.However,due to the limited measurement resolution of the weighing module,the repeatability and uncertainty of the system measurement are relatively high,it affects the measurement consistency and credibility of the system.Therefore,it is urgent to improve the resolution of the optical pressure high-power laser power measurement system through multiple reflective structures.At the same time,an uncertainty evaluation method is urgently needed to effectively evaluate the measurement system.Therefore,it has important theoretical significance and application value to study the optical pressure multi-reflective high-power laser power measurement technology.Based on the analysis of the current research situation of high-power laser power measurement methods,and based on the principle of optical pressure conversion quality measurement of laser power,the optical pressure high-power laser power measurement method of traceability to quality is described in detail,and provides an integrated framework for the optical pressure high-power laser power measurement system of traceability to quality,and implements a single reflection optical pressure type high-power laser power measurement system,which can accurately measure high-power laser power in real-time and conduct detailed experiments and research on the repeatability of the maximum component measurement of system uncertainty.Aiming at the problem of high measurement repeatability caused by the limited resolution of the single reflection high-power laser power measurement system based on optical pressure,a method for measuring the power of optical pressure high-power laser based on multiple reflections is proposed.The design principle of multiple reflections is proposed,and a third reflection high-power laser power measurement system based on optical pressure is designed and implemented,which enhances the optical pressure force of the sensing mirror by three times,Significantly improved the resolution level of the measurement system.Aiming at the lack of measurement uncertainty evaluation methods for optical pressure type high-power laser power measurement systems with traceability to quality,the uncertainty evaluation method for optical pressure high-power laser power measurement system based on Monte Carlo method was proposed,and the Monte Carlo computational simulation model for the measurement system was constructed,obtaining more reliable measurement uncertainty evaluation results for optical pressure laser power measurement systems.Experimental research shows that the integrated framework of the optical pressure type high-power laser power measurement system can be effectively used in optical pressure laser power measurement systems.The proposed optical pressure single reflection laser power measurement method with traceability to quality can accurately measure high-power laser power in real time.The proposed optical pressure type multiple reflection laser power measurement method can increase the optical pressure gain by three times compared to a single reflection laser power measurement system,improving the system’s measurement resolution level and accuracy.The proposed measurement uncertainty method for optical pressure laser power measurement system based on Monte Carlo method can accurately evaluate the system.The integrated optical pressure multiple reflection high-power laser power measurement system can accurately measure high-power laser power in real time,providing a new approach,method,and concept for measuring high-power laser power.