一种测量二极管侧面抽运固体激光器热焦距的方法

提出了一种能够简单、准确测量二极管侧面抽运固体激光器热透镜焦距的方法，明确提出采用非对称平平腔测量时，激光晶体端面与腔镜的间距不需要为零，并从实验上证明了方法的可靠性. 应用该方法的测量结果可以优化复合折叠和频黄光激光器的结构，保证两束基频在腔内达到最佳的空间重合，提高腔内和频效率. 关键词： 全固态激光器 Nd∶YAG激光器 热焦距 腔内和频

A method for measuring thermal focal length of LD-side-pumped laser crystal

This paper reports a simple and accurate method for measuring thermal focal length of LD-side-pumped laser crystal. While applying the nonsymmetrical plane-plane-cavity to measure the thermal focal length, the distance from the end of the laser crystal to the end mirror need not be zero, and the reliability of this method is proved by experiments. Based on the obtained measurement results, folding configuration oscillators of yellow laser for intracavity sum frequency can be optimized, which ensures high space overlapping of two fundamental beams and high sum frequency efficiency.