Theoretical and experimental research on laser cavity with wide dynamic stability zone
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摘要: 根据谐振腔理论,详细分析了内含热透镜的平凹腔的动态稳定性.指出在某一特定情形下,平凹腔可以只存在单一的稳定区.在此基础上,笔者以最佳输出功率曲线为目标,选择了一组腔参数,实验结果表明,该激光器在较宽的泵浦功率范围内,其输出功率与输入呈现良好的线性关系.Abstract: Based on cavity theory,the characteristics of dynamic stability zone of a parallel-concave laser cavity are analyzed in detail,taking account of thermal lens effect equivalent to convex lens.In general,the laser with parallel-concave cavity can operate in one of two dynamic stability zones.We found that,in a special case,the parallel-concave cavity has only one dynamic stability zone.According to theoretical analysis,we selected a set of cavity parameters and carried out the experiments,taking Nd:YAG as a exmple.The results show that the output power of laser increase with the pumping power in a rather wide range.
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Keywords:
- thermal lens effect /
- laser cavity /
- dynamic stability /
- output power
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