| 非稳腔的远场光强分布和光束质量 |
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| 引用本文： | 罗时荣,吕百达,黄鹭. 非稳腔的远场光强分布和光束质量[J]. 激光技术, 1999, 23(5): 281-284 |
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| 作者姓名： | 罗时荣 吕百达 黄鹭 |
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| 作者单位： | 1.四川大学激光物理与化学研究所, 成都 610064 |
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| 基金项目： | 国家高技术激光技术主题项目资助 |
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| 摘 要： | 在对远场光强分布分析的基础上,对非稳腔的光束质量作了详细研究。证明了当遮拦比ε→1时,其远场光强是零阶贝塞尔光束分布。对数值计算结果的物理分析表明:用“桶中功率”曲线是评价非稳腔远场光束质量适用的方法。同时,也指出了这种方法的不足之处。
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| 关 键 词： | 非稳腔 光束质量 桶中功率 光束参数乘积 |
| 收稿时间： | 1998-08-25 |
| 修稿时间： | 1998-08-25 |
The far-field intensity distribution and beam quality of unstable resonators |
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| Luo Shirong,Lü Baida,Huang Lu. The far-field intensity distribution and beam quality of unstable resonators[J]. Laser Technology, 1999, 23(5): 281-284 |
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| Authors: | Luo Shirong Lü Baida Huang Lu |
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| Abstract: | Based on the analysis of the far-field intensity distribution,the beam quality of unstable resonators has been studied in detail.Ithas been proven that the intensity in the far-field of unstable resonato rs is the zeroth order Bessel beam distribution,if the obscure ratio ε→1.N umerical calculation and analysis have shown that the "power in the bucket" curve is a suitable method used to characterize the beam quality in the far-field of unstable resonators.Meanwhile,the shortcomings of this method have been poin ted out. |
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| Keywords: | unstable resonator beam quality power in the bucket(PIB) beam parameter product |
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