Pires D G, Rocha J C A, Jesus-Silva A J, Fonseca E J S
Opt Lett. 2020 Jul 15;45(14):4064-4067. doi: 10.1364/OL.394640.
By considering parity-defined Laguerre-Gaussian (LG) and Hermite-Gaussian (HG) beams as input modes, we present arguments through experimental and theoretical results in order to affirm that using HG modes as bases is more suitable for optical mode conversion than using LG modes. By analyzing the normalized overlap integral and the generated modes, we determine a clear rule for the dominant mode for nonlinear mixing of HG beams, while the same is not possible for LG beams. In addition, examples of optical modal conversion using both HG and LG modes as input beams are demonstrated.
通过将奇偶性定义的拉盖尔 - 高斯（LG）光束和厄米 - 高斯（HG）光束视为输入模式，我们通过实验和理论结果进行论证，以确认使用HG模式作为基比使用LG模式更适合光学模式转换。通过分析归一化重叠积分和生成的模式，我们确定了HG光束非线性混合主导模式的明确规则，而LG光束则无法做到这一点。此外，还展示了以HG和LG模式作为输入光束的光学模式转换示例。
