Institute of Modern Optics, Key Laboratory of Optoelectronic Information Science and Technology, Ministry of Education of China, Nankai University, Tianjin, 300071, China.
Opt Lett. 2010 May 1;35(9):1485-7. doi: 10.1364/OL.35.001485.
We study modified optical vortices for encoding topological charges based on radius ratios between principal and the modified first sidelobe rings. The method is immune to harassments from alignment and phase matching between the beams and optical elements. Moreover, it is demonstrated that the radius ratios and their corresponding modulation parameters are independent to wavelength and size of the spiral phase mask.
我们研究了基于主环和修正第一旁瓣环之间的半径比的修改型光学涡旋，用于编码拓扑电荷。该方法不受光束和光学元件之间的对准和相位匹配的干扰。此外，还证明了半径比及其对应的调制参数与螺旋相位掩模的波长和尺寸无关。
