Controllable Rotations of Spiraling Elliptic Beams in Anisotropic Linear Media

Controllable Rotations of Spiraling Elliptic Beams in Anisotropic Linear Media
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各向异性线性介质中螺旋椭圆梁的可控旋转

DOI:
10.1109/jphot.2017.2734066
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发表时间:
2017-10
影响因子:
2.4
通讯作者:
Ren Zhanmei
Ren Zhanmei
中科院分区:
工程技术4区
文献类型:
--
作者:
Liang Guo;Jia Tingjian;Ren Zhanmei

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研究了螺旋椭圆光束在各向异性介质中的旋转特性。基于柯林斯公式,得到了带有轨道角动量的螺旋椭圆光束的傍轴波动方程的精确解析解。研究发现,旋转特性与OAM密切相关,而OAM可由介质的线性各向异性控制。对于单轴晶体等各向异性介质,螺旋椭圆光束在输出端的旋转速度只能通过改变单轴晶体的光轴方向来控制。根据各向异性参数,两个旋转模式的螺旋椭圆光束的预测。对于小的各向异性参数,在一定的传输距离上,螺旋椭圆光束的旋转方向发生反转。当各向异性参数足够大时,旋转方向的反转消失。研究结果对光束的控制具有潜在的应用价值。
We study the rotation properties of spiraling elliptic beams in the anisotropy media. Based on the Collins formula, we obtain the exact analytical solution of the spiraling elliptic beams carrying the orbital angular momentum (OAM) to the paraxial wave equation. It is found that the rotation property is closely relevant to the OAM, which can be controlled by the linear anisotropy of media. For an anisotropic media such as the uniaxial crystal, the rotation velocity of spiraling elliptic beams at the output can be controlled only by changing the direction of the optic axis of the uniaxial crystal. Depending on the anisotropy parameter, two rotation modes are predicted for the spiraling elliptic beam. For small anisotropy parameter, the rotation direction of the spiraling elliptic beam is inverted at a certain propagation distance. When the anisotropy parameter is large enough, the invertion of the rotation direction disappears. The results are potentially useful in controlling the optical beams.
具有线性各向异性的可饱和非线性介质中椭圆呼吸器的动力学
DOI: 10.1088/2040-8978/16/8/085205
发表时间: 2014-02
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