六边形“之”字光路板条激光器

• 作 者: 刘亮 郭少锋 陆启生 许晓军
• 机 构: 国防科技大学光电科学与工程学院,
• 出 处: 中国激光
• 发表日期: 2010年11期
• 关键词: 激光介质 抽运功率 波前畸变 光束质量 布儒斯特角 填充因子 激光晶体 激光输出 侧面抽运 温度场分布

提出了一种六边形板条激光介质设计方法,由于激光在介质内部沿“之”字形光路传输,与COFFIN板条相比,同等抽运功率水平下六边形板条中热致波前畸变的幅值更低,并且更加容易补偿。此外,当激光沿板条长度方向入射时,激光在入射端面上的入射角即为布儒斯特角,且激光可以完全覆盖整个入射端面,在板条内部填充因子为1。

A hexagonal lath laser medium design method is proposed. Since the laser light is transmitted along the “” shaped optical path inside the medium, compared with the COFFIN lath, the laser induced heat in the hexagonal lath at the same pumping power level The amplitude of the wavefront distortion is lower and more easily compensated. In addition, when the laser beam is incident along the length of the slab, the incident angle of the laser beam on the incident end face is Brewster’s angle, and the laser can completely cover the entire incident end face. The fill factor in the slab is 1.