强激光与粒子束, 2004, 16 (7): 865, 网络出版: 2006-05-15   

复宗量双曲余弦高斯光束的束腰及其位置

Beam waist width and waist location of the complex-argument cosh-Gaussian beams
作者单位
西南交通大学,理学院,应用物理系,四川,成都,610031
摘要
由复宗量双曲余弦高斯光束通过近轴ABCD光学系统传输公式,推导出了基于二阶矩定义的光斑尺寸的解析表达式,给出了复宗量双曲余弦高斯光束在自由空间传输和通过薄透镜时的光斑尺寸、束腰宽度及其位置的解析表达式,并进行了数值计算,对计算结果进行了分析和讨论,该方法可用于其它光束通过近轴ABCD光学系统的类似计算.
Abstract
Starting from the propagation equation of complex-argument cosh-Gaussian (ChG) beams passing through a paraxial ABCD optical system and based on the second-order moments method, the closed-form expression for the beam width of complex-argument ChG beams passing through a paraxial ABCD optical system is derived, the waist width and their location of the beams propagating in free space and through a thin lens are also deduced. Numerical calculations are made to illustrate the properties of the complex-argument ChG beams.
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王喜庆, 王莉, 孔瑞霞, 王庆峰, 吕百达. 复宗量双曲余弦高斯光束的束腰及其位置[J]. 强激光与粒子束, 2004, 16(7): 865. WANG Xi-qing, WANG Li, KONG Rui-xia, WANG Qing-feng, Lü Bai-da. Beam waist width and waist location of the complex-argument cosh-Gaussian beams[J]. High Power Laser and Particle Beams, 2004, 16(7): 865.

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