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2 GHz passively harmonic mode-locked fiber laser by a microfiber-based topological insulator saturable absorber

机译:基于超细纤维的拓扑绝缘体可饱和吸收器的2 GHz被动谐波锁模光纤激光器

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摘要

We report on the generation of passive harmonic mode locking of a fiber laser using a microfiber-based topological insulator (TI) Bi_2Te_3 saturable absorber (SA). The optical deposition method was employed to fabricate the microfiber-based TISA. By virtue of the excellent nonlinear optical property of the proposed TISA, the fiber laser could operate at the pulse repetition rate of 2.04 GHz under a pump power of 126 mW, corresponding to the 418th harmonic of fundamental repetition frequency. The results demonstrate that the microfiber-based TI photonic device can operate as both the high nonlinear optical component and the SA in fiber lasers, and could also find other applications in the related fields of photonics.
机译:我们报告了使用基于微纤维的拓扑绝缘体(TI)Bi_2Te_3饱和吸收体(SA)产生的光纤激光器的被动谐波模态锁定。采用光学沉积方法来制造基于微纤维的TISA。凭借所提出的TISA的出色的非线性光学特性,光纤激光器可以在126 mW的泵浦功率下以2.04 GHz的脉冲重复频率工作,对应于基本重复频率的418次谐波。结果表明,基于微纤维的TI光子器件既可以用作光纤激光器中的高非线性光学组件,又可以用作SA,并且还可以在光子学的相关领域中找到其他应用。

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