基于辐射压力测量技术的千瓦级高能激光功率测量装置

Kilowatt-Level High Laser Power Measurement Device Based on Radiation Pressure Measurement Technology

随着高能激光功率的不断增加,在实际应用中对高能激光功率的实时精确测量的需求愈发显著。传统的激光功率测量方式以吸收式量热功率计为主。吸收式量热功率计存在体积庞大、测量速度慢、测量精度难以提升等共同问题,不适合高能激光的实时功率测量需求,而辐射压力功率测量装置能够有效解决上述问题。基于辐射压力功率测量原理,设计并研制能够实时测量激光功率最高达6 kW的辐射压力功率测量装置。该辐射压力功率测量装置针对1 080 nm高能红外激光器输出激光功率进行测量,实际功率测量范围可达1~6kW,测量分辨率低至50 W,测量重复性优于1%,研究成果能够满足千瓦量级高能激光功率的实时精确测量需求,实现对高能激光的功率实时监测与传输损耗评估,在高能激光加工、激光制导与激光通信等领域的实际应用中具备研究意义。

With the continuous increase of high power laser,the demand for real-time accurate measurement of laser power in practical applications is becoming more and more significant.The traditional laser power measurement mainly depends on absorption calorimeter.The absorption calorimeter has some common problems,including large volume,slow measurement speed and low measurement accuracy.As a result,it is not suitable for the real-time power measurement of high power laser.The radiation pressure power measurement can effectively solve those problems.Based on the principle of radiation pressure power measurement,this paper designs and develops a rediation pressure power measurement device which can measure laser power up to 6 kW in real time.The device measures the output power of high-power infrared laser at 1 080 nm.The power range reaches 1 kW to 6 kW,the resolution of measurement reaches 50 W,and the measurement stability is better than 1%.The device can meet the real-time and accurate measurement requirements of kilowatt high power laser.The device can monitor the laser power in real-time,and can evaluate the transmission loss.The device will have great research value in the practical applications including high energy laser processing,laser guidance and laser communication.