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Vector rectangular-shape laser based on reduced graphene oxide interacting with a long fiber taper

机译:基于还原型氧化石墨烯与长纤维锥度相互作用的矢量矩形激光器

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摘要

A vector dual-wavelength rectangular-shape laser (RSL) based on a long fiber taper deposited with reduced graphene oxide is proposed, where nonlinearity is enhanced due to a large evanescent-field-interacting length and strong field confinement of an 8 mm fiber taper with a waist diameter of 4 μm. Graphene flakes are deposited uniformly on the taper waist with light pressure effect, so this structure guarantees both excellent saturable absorption and high nonlinearity. The RSL with a repetition rate of 7.9 MHz shows fast polarization switching in two orthogonal polarization directions, and temporal and spectral characteristics are investigated.
机译:提出了一种基于长纤维锥度并沉积有氧化石墨烯的矢量双波长矩形激光(RSL),其中由于laser逝场相互作用长度大和8 mm光纤锥度的强场约束而增强了非线性腰部直径为4μm。石墨烯薄片在轻微的压力作用下均匀地沉积在锥形腰部上,因此这种结构既保证了出色的饱和吸收性又保证了高非线性度。重复频率为7.9 MHz的RSL在两个正交极化方向上显示了快速极化切换,并研究了时间和频谱特性。

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