理论分析了基于边缘加热条件下气冷钕玻璃放大器的热致波前畸变,模拟计算了不同加热温度下钕玻璃片的温度分布和热波前畸变分布,并进行了实验验证。结果表明,数值模拟与实验结果能较好地吻合,在产热率为0.6 W/cm~3时,钕玻璃片产生的热波前畸变随着边缘温度的增加而减小,而当边缘温度达到90℃时,热波前畸变开始出现反转,随温度增加而增加。合理设计边缘加热结构和优化加热温度,能有效抑制气冷钕玻璃放大器的热波前畸变。 The thermal induced wave front distortion of air cooled neodymium glass amplifiers based on edge heating is analyzed theoretically. The temperature distribution and thermal wavefront distortion distribution of neodymium glass sheets under different heating temperatures are simulated and verified by experiments. The results show that the numerical simulation is in good agreement with the experimental results. When the heat production rate is 0.6 W / cm ~ 3, the thermal wave distortion generated by the neodymium glass decreases with the increase of the edge temperature. When the edge temperature When it reached 90 ℃, the thermal wavefront distortion began to reverse, increasing with increasing temperature. Reasonable design of the edge heating structure and optimize the heating temperature, can effectively inhibit the air-cooled neodymium glass amplifier thermal wavefront distortion.