锥型全吸收式激光辐照能量测量装置设计

Design of a conical fully absorbing laser irradiation energy measurement device

摘要:

为了准确测量激光辐照能量，设计了一种锥型全吸收式激光辐照能量测量装置，该装置具备测量精度高、小型轻量化及模块化设计便于集成等优点。首先通过光学追迹仿真，在满足轻量化的前提下优化了锥体设计参数以实现最佳的理论吸收效率。随后在温度实验中得出测温电阻阻值与温度的线性关系，并通过温度标定实验建立了装置响应值与温度的线性拟合方程。最后搭建光路并进行能量测量装置响应标定实验，获取并分析了响应数据，提出了一种逃逸能量的补偿方法。实验结果显示，经补偿后的测量结果与功率计测量结果偏差为1.968％，表明该装置在激光辐照能量测量方面具有较高准确度，为激光能量测量提供了重要参考，对激光发射系统性能及激光传输特性的评估具有重要意义。

Abstract:

In order to accurately measure laser irradiation energy, a cone-type fully absorbing laser irradiation energy measurement device was designed, which has the advantages of high measurement accuracy, small size, light weight, and a modular design for easy integration. Firstly, the cone design parameters were optimized through optical tracing simulation to achieve optimal theoretical absorption efficiency while maintaining a lightweight structure. Subsequently, the linear relationship between the resistance value of the temperature sensor and temperature was derived from temperature experiments, and a linear fitting equation for the device's response to temperature was established through temperature calibration experiments. Finally, the optical path was constructed, and response calibration experiments for the energy measuring device were performed. The response data were obtained and analyzed, and a compensation method for escaped energy was proposed. The results of the experiment show that the deviation of the compensated measurement results from the power meter is 1.968%, indicating that the device achieves high accuracy in laser irradiation energy measurement, which provides an important reference for laser energy systems and laser transmission characteristics.