大口径倍频晶体高精度温控装置的研制

发布时间：2018-04-18 14:39

本文选题：激光器 + ADP晶体　；参考：《红外与激光工程》2017年04期

【摘要】：非临界相位匹配条件下,为保证大口径倍频晶体具有较高的温度稳定性与一致性,在全口径范围内实现最优的倍频转换效率,设计了一种采用电加热方法进行高精度温度控制的装置。在装置设计中,充分考虑倍频晶体导热系数小、形状薄而大的特点,通过热传导加热倍频晶体,并同时加热装置其他部分,形成自然对流,均衡晶体温度。通过仿真和实验得到该装置温度分布的整体规律,得到在不同加热长度下,晶体稳定温度及稳定所需时长随晶体材料导热系数变化的规律。实验和仿真均表明:该装置能加热Φ80 mm口径的倍频晶体至目标温度,并将其温度一致性控制在±0.15°C范围内。
[Abstract]:Under the condition of non-critical phase matching, in order to ensure the high temperature stability and consistency of the large-aperture frequency-doubling crystal, the optimal conversion efficiency is achieved in the full aperture range.A high precision temperature control device using electric heating method is designed.In the design of the device, the characteristics of low thermal conductivity, thin shape and large shape of frequency-doubling crystal are fully taken into account. The doubling crystal is heated by heat conduction and other parts of the device are heated at the same time to form natural convection and equalize crystal temperature.Through simulation and experiment, the whole rule of temperature distribution of the device is obtained, and the variation of the temperature and the time required for the stabilization of the crystal with the thermal conductivity of the crystal material is obtained under different heating lengths.The experimental and simulation results show that the device can heat 桅 80mm frequency doubling crystal to the target temperature, and the temperature consistency is controlled in the range of 卤0.15 掳C.
【作者单位】：哈尔滨工业大学机电工程学院;
【基金】：中央高校基本科研业务费专项资金(2014056) 教育部“春晖计划”合作项目(Z2014105)
【分类号】：TN24

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