CrBi2Te4-based mode-locked fiber laser with three switchable operating states

IF 3.1 3区物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION

Infrared Physics & Technology Pub Date : 2025-02-20 DOI:10.1016/j.infrared.2025.105724

Chengda Ge , Yong Yao , Yu Yang , Linguang Guo , Songting Li , Haoxue Qiu , Chonghao Wu , Tianliang Liu , Jianan Duan , Xiaochuan Xu , Jiajun Tian

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引用次数: 0

Abstract

In recent years, 2D materials have been widely used in the field of optoelectronics, and these 2D materials have further improved the performance of fiber lasers. CrBi₂Te₄ is a member of the 2D material family known as topological insulators, featuring unique ferromagnetic properties and potential for saturation absorption. In this paper, we study the saturation absorption characteristics of CrBi₂Te₄-PVA nanosheets and CrBi₂Te₄ D-type fibers, and verify their nonlinear absorption characteristics in erbium-doped fiber lasers. When CrBi₂Te₄-PVA nanosheets are used as SAs, 10th-order harmonic pulses with a pulse width of 765.1 fs are generated. Utilizing CrBi₂Te₄ D-type fibers as saturable absorbers (SAs) leads to the generation of dark solitons and bright-dark soliton pairs, with average output powers reaching a maximum of 2.38 mW and 3.12 mW, respectively. To the best of our knowledge, this is the first presentation of a mode-locked fiber laser with the CrBi₂Te₄-based SA, and also the first study of bright and dark soliton properties of a CrBi₂Te₄-based fiber laser. It is foreseeable that CrBi₂Te₄ will become an appealing candidate for bright and dark soliton fiber lasers.

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来源期刊

Infrared Physics & Technology 物理-光学

CiteScore

5.70

自引率

12.10%

发文量

400

审稿时长

67 days

期刊介绍： The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.