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首页> 外文期刊>The European physical journal, D. Atomic, molecular, and optical physics >Propagation of Ince-Gaussian beams in uniaxial crystals orthogonal to the optical axis
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Propagation of Ince-Gaussian beams in uniaxial crystals orthogonal to the optical axis

机译：Ince-Gaussian光束在与光轴正交的单轴晶体中的传播

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摘要

An analytical propagation expression of an Ince-Gaussian beam in uniaxial crystals orthogonal to the optical axis is derived. The uniaxial crystal considered here has the property of the extraordinary refractive index being larger than the ordinary refractive index. The Ince-Gaussian beam in the transversal direction along the optical axis spreads more rapidly than that in the other transversal direction. With increasing the ratio of the extraordinary refractive index to the ordinary refractive index, the spreading of the Ince-Gaussian beam in the transversal direction along the optical axis increases and the spreading of the Ince-Gaussian beam in the other transversal direction decreases. The effective beam size in the transversal direction along the optical axis is always larger than that in the other transversal direction. When the even and odd modes of Ince-Gaussian beams exist simultaneously, the effective beam size in the direction along the optical axis of the odd Ince-Gaussian beam is smaller than that of the even Ince-Gaussian beam in the corresponding direction, and the effective beam size in the transversal direction orthogonal to the optical axis of the odd Ince-Gaussian beam is larger than that of the even Ince-Gaussian beam in the corresponding direction.
机译：推导了因斯-高斯光束在与光轴正交的单轴晶体中的解析传播表达式。这里考虑的单轴晶体具有非常折射率大于寻常折射率的特性。沿光轴的横向方向上的因斯-高斯光束比在另一横向方向上的因斯-高斯光束扩展得更快。随着异常折射率与寻常折射率之比的增加，沿光轴在横向上的因斯-高斯光束的扩展增加，而在另一横向上的因斯-高斯光束的扩展减小。沿着光轴的横向方向上的有效光束尺寸始终大于另一个横向方向上的有效光束尺寸。当Ince-Gaussian光束的偶数和奇数模同时存在时，沿奇Ince-Gaussian光束光轴方向的有效光束尺寸小于相应方向上的Ince-Gaussian光束的有效光束尺寸，并且与奇数Ince-高斯光束的光轴正交的横向方向上的有效光束尺寸大于相应方向上的偶数Ince-Gauss光束的有效光束尺寸。

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