| 空心光束在损耗和增益介质中的传输特性 |
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| 引用本文： | 朱焯炜,赵琳琳,苏宙平.空心光束在损耗和增益介质中的传输特性[J].江南大学学报(自然科学版),2011,10(4):464-467. |
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| 作者姓名： | 朱焯炜 赵琳琳 苏宙平 |
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| 作者单位： | 江南大学理学院,江苏无锡,214122 |
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| 基金项目： | 国家自然科学青年基金项目(60908041) |
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| 摘 要： | 从复数波数定义和广义惠更斯-菲涅尔积分出发,推导出空心光束在介质中通过旁轴ABCD光学系统后的一般传输公式。在此基础上,结合光强二阶矩方法,给出了相应的一般束宽变换公式。通过数值分析研究了介质传输场中强度分布和均方根束宽的变化特点。研究结果表明,空心光束在增益或者损耗介质中传输时,当其为增益(损耗)介质时,会增强(衰减)光束的强度;但对均方根束宽却没有太大的影响。
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| 关 键 词： | 激光光学 空心光束 损耗或增益介质 传输特性 |
Propagation Properties of Dark Hollow Beams in Linear Gain and Loss Media |
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| ZHU Zhuo-wei,ZHAO Lin-Lin,SU Zhou-ping.Propagation Properties of Dark Hollow Beams in Linear Gain and Loss Media[J].Journal of Southern Yangtze University:Natural Science Edition,2011,10(4):464-467. |
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| Authors: | ZHU Zhuo-wei ZHAO Lin-Lin SU Zhou-ping |
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| Institution: | ZHU Zhuo-wei,ZHAO Lin-Lin,SU Zhou-ping(School of Science,Jiangnan University,Wuxi 214122,China) |
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| Abstract: | Based on the definition of complex wave number and the generalized Huygens-Fresnel diffraction integral,the closed-form propagation equation of Dark hollow beams passing through a paraxial optical ABCD system is derived.The beam-width propagation formula of Dark hollow beams through absorption media are obtained on the basis of the second-order moment method.By numerical analysis,the intensity distributions and beams waist width have been studied.The results show that,the dark hollow beams propagation in li... |
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| Keywords: | laser optics dark hollow beam gain or loss media propagation properties |
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