Metallic transition metal dichalcogenide-based single-frequency fiber lasers with sub-kHz linewidths

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2025-03-22 DOI:10.1016/j.optmat.2025.116941

Yiyu Gan, Wenyao Zhang, Qiao Wen

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Abstract

MTe₂ (M = V, Nb), with remarkable physical features, is a typical layered metallic transition metal dichalcogenide that has garnered a lot of interest. It has established a wide range of applications in the disciplines of advanced electronic devices, magnetics, and electrochemistry. Nevertheless, its utilization in single frequency fiber lasers has been rather restricted. MTe₂ (M = V, Nb) samples were exfoliated into a few layers by using liquid phase exfoliation. Next, by carefully depositing MTe2 (M = V, Nb) nanosheets onto the surface of D-shaped fibers, we investigated the potential applications of MTe₂ (M = V, Nb)-based transient bragg grating. This resulted in the successful development of two stable single-frequency fiber lasers based on VTe₂ and NbTe₂, respectively. The center wavelengths of these SFFLs are approximately 1550 nm. The linewidth of NbTe₂, which is the narrowest ever reported for an SFFL based on low-dimensional materials, was measured to be approximately 354.5 Hz, with a signal-to-noise ratio of 72.672 dB. The signal-to-noise ratio of VTe₂ is about 75.22 dB, the highest observed among lasers based on low-dimensional materials.

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亚千赫线宽的金属过渡金属二硫族化合物单频光纤激光器

MTe2 （M = V, Nb）是一种典型的层状过渡金属二硫族化合物，具有显著的物理特征，引起了人们的广泛关注。它在先进的电子器件、磁学和电化学等学科中建立了广泛的应用。然而，它在单频光纤激光器中的应用受到了很大的限制。采用液相剥离法将MTe2 （M = V, Nb）样品剥离成几层。接下来，通过将MTe2 （M = V, Nb）纳米片精心沉积到d形纤维表面，我们研究了MTe2 （M = V, Nb）基瞬态光栅的潜在应用。这导致了分别基于VTe2和NbTe2的两种稳定的单频光纤激光器的成功开发。这些sffl的中心波长约为1550 nm。NbTe2的线宽为354.5 Hz，信噪比为72.672 dB，是迄今为止报道的基于低维材料的SFFL中最窄的线宽。VTe2的信噪比约为75.22 dB，是低维材料激光器中观测到的最高的。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.