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将非高斯加热光束引入到模式不匹配的脉冲热透镜技术中,描述了非高斯加热光束热透镜技术的优点。实验研究了不同加热光束形状时热透镜信号的振幅和时间特性以及与实验参数的关系。实验结果显示在不同加热光束形状时都可通过使用近场探测构型和优化实验参数如探测距离提高热透镜技术的测量灵敏度,而通过使用远场探测构型则可消除实验参数对材料热性质测量的影响。
The introduction of non-Gaussian heated beams into mode-mismatched pulsed thermal lens technology describes the advantages of non-Gaussian heated beam thermal lens technology. Experimental study of different heating beam shape thermal lens signal amplitude and time characteristics and the relationship with the experimental parameters. The experimental results show that the measurement sensitivity of the thermal lens technology can be improved by using the near-field detection configuration and optimizing the experimental parameters such as the detection distance at different heating beam shapes, and by using the far-field detection configuration, the thermal properties of the material Impact of measurement.