| 高功率激光技术中的光束控制和相关问题 |
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| 引用本文： | 吕百达,季小玲,罗时荣.高功率激光技术中的光束控制和相关问题[J].红外与激光工程,2003,32(1):52-56. |
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| 作者姓名： | 吕百达 季小玲 罗时荣 |
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| 作者单位： | 1. 四川大学激光物理与化学研究所,四川,成都,610064
2. 四川大学激光物理与化学研究所,四川,成都,610064;四川师范大学电子工程学院,四川,成都,610066 |
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| 基金项目： | 国家高技术激光技术主题资助课题。 |
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| 摘 要： | 对高功率激光进行了研究。以平顶高斯光束为例,推导出了它通过无光阑和有光阑的近轴ABCD光学系统传输的解析表达式。给出了它的特征参数,包括光束传输因子(M2因子)、陡峭度(K参数)和桶中功率(PIB)并作了物理分析。最后,指出高功率激光光束控制应使光束在靶面上的功率/能量集中度、时间和空间波形、瞄准稳定性以及时间持续性等指标满足应用要求。
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| 关 键 词： | 光束控制 高功率激光器 特征参数 |
| 文章编号： | 1007-2276(2003)01-0052-05 |
| 收稿时间： | 2002/5/9 |
| 修稿时间： | 2002年5月9日 |
Beam control and relative problems in high-power laser technology |
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| Abstract: | The subject how to characterize high-power lasers is studied. The flattened Gaussian beam (FGB) is taken as an illustrative example, and the propagation of FGBs passing through unapertured and apertured paraxial ABCD optical systems is expressed in the analytical form. The beam characteristic parameters including the beam propagation factor (M2 factor), kurtosis (K parameter) and power in the bucket (PIB) of FGBs are given and analyzed physically. Finally, it is pointed out that from a practical point of view the beam control of high-power lasers means that the power/energy focusability on the target, temporal and spatial profile, pointing stability and sustainability of beams should satisfy application requirements. It is a challenging subject in modern optics and laser technology. |
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| Keywords: | Beam control High-power laser Characteristic parameter |
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