Generation and dynamics of dual-wavelength solitons in ultrafast fiber lasers

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-03-26 DOI:10.1016/j.optlastec.2025.112873

Ling Yun , Guotao Chen , Guangwei Chen , Fan Ye , Jie Zhou , Zuxing Zhang , Ruilin Zheng

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Abstract

We present a comprehensive investigation of dual-wavelength soliton dynamics in an erbium-doped fiber laser incorporating lead selenide quantum dots (PbSe QDs) as a saturable absorber. Stable dual-wavelength operation at 1529 nm and 1557 nm is demonstrated, exhibiting distinct spectral and temporal characteristics. Reversible transitions between dual- and single-wavelength states are achieved by tuning the intracavity polarization controller. Numerical simulations, in excellent agreement with experimental results, reveal that dual-wavelength generation arises from the interplay of the erbium gain profile, birefringence-induced spectral filtering, and the nonlinear absorption of PbSe QDs. Additionally, soliton interactions exhibit elastic collisions with a 562 Hz repetition-rate difference, confirming independent propagation dynamics. These findings establish PbSe QDs as a promising nonlinear medium for multi-wavelength fiber lasers, with potential applications in dual-comb spectroscopy and wavelength-division multiplexing networks.

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我们对掺铒光纤激光器中的双波长孤子动力学进行了全面研究，该激光器采用了硒化铅量子点（PbSe QDs）作为可饱和吸收体。在 1529 nm 和 1557 nm 波长处实现了稳定的双波长运行，表现出不同的光谱和时间特性。通过调整腔内偏振控制器，实现了双波长和单波长状态之间的可逆转换。数值模拟与实验结果非常吻合，表明双波长的产生源于铒增益曲线、双折射引起的光谱滤波以及硒铅 QDs 非线性吸收的相互作用。此外，孤子相互作用呈现出 562 Hz 重复率差异的弹性碰撞，证实了独立的传播动力学。这些发现确立了 PbSe QDs 作为多波长光纤激光器非线性介质的前景，并有望应用于双梳光谱学和波分复用网络。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems