Abstract Germanium phosphide (GeP), a rising star of novel two-dimensional (2D) material composed of Group IV–V elements, has been extensively studied and applied in photonics thanks to its broadband optical absorption, strong light–matter interaction and flexible bandgap structure. Here, we show the strong nonlinear optical (NLO) properties of 2D GeP nanoflakes in the broadband range with open-aperture Z-scan technique to explore the performance of 2D GeP microfiber photonic devices (GMPDs) in near-infrared (near-IR) and mid-infrared (mid-IR) ultrafast photonics. Our results suggest that employing the GMPD as an optical device in an erbium-doped fiber laser (EDFL) system results in ultrashort pulses and rogue waves (RWs) at 1.55 μm. Likewise, by the incorporation of GMPD into a thulium-doped fiber laser (TDFL) system, stable ultrashort pulse operation is also achieved at 2.0 μm. We expect these findings to be an excellent GMPD that can be applied in mode-locked fiber lasers to open up new avenues for its development and application in ultrafast photonics.

中文翻译：

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用于近红外和中红外超快光子学的基于 2D GeP 的光子器件

摘要 磷化锗 (GeP) 是一种由 IV-V 族元素组成的新型二维 (2D) 材料的后起之秀，由于其宽带光吸收、强光-物质相互作用和灵活的带隙，在光子学中得到了广泛的研究和应用。结构体。在这里，我们使用开放孔径 Z 扫描技术展示了 2D GeP 纳米薄片在宽带范围内的强非线性光学 (NLO) 特性，以探索 2D GeP 微纤维光子器件 (GMPD) 在近红外（近红外）中的性能和中红外（mid-IR）超快光子学。我们的结果表明，在掺铒光纤激光器 (EDFL) 系统中使用 GMPD 作为光学器件会产生 1.55 μm 的超短脉冲和流氓波 (RW)。同样，通过将 GMPD 纳入掺铥光纤激光器 (TDFL) 系统，在 2.0 μm 也实现了稳定的超短脉冲操作。我们预计这些发现将成为一种出色的 GMPD，可应用于锁模光纤激光器，为其在超快光子学中的开发和应用开辟新途径。