| 光束截面的动量守恒及动量衍射发散度 |
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| 引用本文： | 曹清 郭弘. 光束截面的动量守恒及动量衍射发散度[J]. 光学学报, 1996, 16(3): 57-261 |
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| 作者姓名： | 曹清 郭弘 |
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| 作者单位： | 中国科学院上海光学精密机械研究所 |
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| 摘 要： | 在忽略了瞬逝波的条件下，证明真空中单色标量光场的光束截面的动量及其任一分量都与轴向坐标无关，为守恒量；文中还给出了动量衍射发散度的表达式。
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| 关 键 词： | 光流体模型 光束截面动量 动量衍射发散度 |
| 收稿时间： | 1995-03-02 |
Conservation of Beam Cross Section Momentum and Momentum Diffraction Divergence |
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| Cao Qing Guo Hong Deng Ximing. Conservation of Beam Cross Section Momentum and Momentum Diffraction Divergence[J]. Acta Optica Sinica, 1996, 16(3): 57-261 |
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| Authors: | Cao Qing Guo Hong Deng Ximing |
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| Abstract: | In this paper, it is proved that the beam cross section momentum and its any component of monochromatic field in vacuum are all invariances and independent of the position of the cross section, provided that the evanescent waves of the plane wave spectrum of the beam are ignored. The expression of the beam momentum diffraction divergence is derived. |
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| Keywords: | HMO beam cross section momentum momentum diffraction divergence. |
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