在涂层和未涂层的渐变折射率和阶梯折射率多模光纤中生成高阶拉盖尔-高斯模
Generation of High-order Laguerre-Gaussian modes in Coated and Uncoated Graded-Index and Step-Index Multimode Fibers
AI总结:
本研究提出了一种高效方法,在多模光纤中通过耦合高斯光束生成高阶拉盖尔-高斯模,验证了其鲁棒性和可扩展性。
摘要:
我们报告了一种高效的实验方法,通过将高斯光束耦合到多模光纤(MMF)的包层中,以生成高阶拉盖尔-高斯(HOLG)模。特别是,HOLG模式的阶数不受输入功率、传播距离和脉冲持续时间的影响。此外,频谱和功率测量证实,光束成形机制主要是线性的,而克尔非线性主要影响纵向相位匹配条件和转换效率,而不会改变生成的模式阶数。总的来说,这些发现使我们的方法成为生成定制光学光束的高度稳健和可扩展的平台。
英文摘要:
We report an efficient experimental method for generating high-order Laguerre-Gauss (HOLG) modes by simply coupling a Gaussian beam into the cladding of a multimode fiber (MMF). In particular, the order of the HOLG mode remains invariant with respect to input power, propagation distance, and pulse duration. Furthermore, spectral and power measurements confirm that the beam-shaping mechanism is predominantly linear, whereas Kerr nonlinearity primarily affects the longitudinal phase-matching condition and conversion efficiency, without altering the generated mode order. Altogether, these findings establish our approach as a highly robust and scalable platform for generating tailored optical beams.
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