Preparation of tellurium nanowires and its application in ultrafast photonics

He, Pengfei; Hu, Xiangxiang; Hu, Zhiwan; Chen, Jingxian; Xie, Zhaoru; Huang, Jie; Tao, Lili; Lu, Haiming; Hao, Mingming

doi:10.1016/j.jlumin.2022.119335

Cited by 9 publications

(1 citation statement)

References 45 publications

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“…Within this lattice, tellurium atoms are helically arranged to form pseudo-1D chains which subsequently couple into 2D-like sheets through vdW bonds. , This low-symmetry lattice configuration endows tellurene with significant optical dichroism and birefringence . To date, researchers have achieved polarization photodetection with 2D tellurene, enabling broad-spectrum imaging across the visible to mid-infrared range at room temperature. , Moreover, 2D tellurene and its derivatives exhibit substantial nonlinear optical coefficients, thus holding potential for applications in ultrafast lasers and optical modulators. − This underscores the significant potential of 2D tellurene-based in-line optical devices for optical anisotropy-driven functionalities.…”

Section: Introductionmentioning

confidence: 99%

Anisotropic van der Waals Tellurene-Based Multifunctional, Polarization-Sensitive, In-Line Optical Device

Yu,

Mu,

Wang

et al. 2024

ACS Nano

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Polarization plays a paramount role in scaling the optical network capacity. Anisotropic two-dimensional (2D) materials offer opportunities to exploit optical polarizationsensitive responses in various photonic and optoelectronic applications. However, the exploration of optical anisotropy in fiber in-line devices, critical for ultrafast pulse generation and modulation, remains limited. In this study, we present a fiberintegrated device based on a single-crystalline tellurene nanosheet. Benefiting from the chiral-chain crystal lattice and distinct optical dichroism of tellurene, multifunctional optical devices possessing diverse excellent properties can be achieved. By inserting the in-line device into a 1.5 μm fiber laser cavity, we generated both linearly polarized and dual-wavelength mode-locking pulses with a degree of polarization of 98% and exceptional long-term stability. Through a twisted configuration of two tellurene nanosheets, we realized an all-optical switching operation with a fast response. The multifunctional device also serves as a broadband photodetector. Notably, bipolar polarization encoding communication at 1550 nm can be achieved without any external voltage. The device's multifunctionality and stability in ambient environments established a promising prototype for integrating polarization as an additional physical dimension in fiber optical networks, encompassing diverse applications in light generation, modulation, and detection.

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