Single-crystal growth of layered metallic materials of TiTe<sub>2</sub> based on a polytelluride flux method

Feng, Xiaojing; Li, Zhiqi; Chen, Guangda; Yue, Haoyu; Gao, Yan; Zhang, Xiankun; Guo, Zhongnan; Yuan, Wenxia

doi:10.1039/d3ce00619k

CrystEngComm

2023

DOI: 10.1039/d3ce00619k

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Single-crystal growth of layered metallic materials of TiTe₂ based on a polytelluride flux method

Xiaojing Feng,

Zhiqi Li,

Guangda Chen

et al.

Abstract: TiTe2 single crystals were grown via a polytelluride flux method, which show a metallic behavior and low work function.

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2024

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Nonlinear optical absorption of TiTe₂ nanosheets and its application for pulse laser generation

Xu,

Zhang,

Chen

et al. 2024

Opt. Express

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Two-dimensional TiTe2 materials have excellent optical and electrical properties due to their unique semi-metallic properties and are widely used in detectors, photocatalysis, and field effect tubes. However, their potential in field of nonlinear optics (NLO) and ultrafast photonics has not been explored. In this paper, TiTe2 nanosheets are prepared by liquid-phase exfoliation, and their excellent nonlinear optical properties are being demonstrated. Z-scan measurements show that their nonlinear absorption coefficients are -6.83 ± 0.52 and -15.10 ± 0.82 cm GW-1 at 1560 and 2000nm, respectively, exhibiting saturable absorption properties. Two saturable absorbers (SA) based on TiTe2 nanosheets are prepared, one by encapsulating TiTe2 nanosheets in a polyvinyl alcohol (PVA) film and the other by depositing them on D-shape fiber (DSF). Finally, a Q-switched operation is achieved using TiTe2-PVA SA, with the maximum output power of 14.2 mW, corresponding to a pulse energy of up to 212.9 nJ. Stable mode-locked operation is achieved using TiTe2-DSF SA with a signal-to-noise ratio and pulse duration of 70 dB and 788 fs, respectively. Notably, this is the first time that TiTe2 nanosheets have been used as SA. The results suggest that TiTe2 nanosheets are a high-performance nonlinear material that provides a new impetus for the development of NLO and ultrafast photonics.

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Nonlinear optical absorption of TiTe₂ nanosheets and its application for pulse laser generation

Xu,

Zhang,

Chen

et al. 2024

Opt. Express

View full text Add to dashboard Cite

show abstract

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Single-crystal growth of layered metallic materials of TiTe₂ based on a polytelluride flux method

Abstract: TiTe2 single crystals were grown via a polytelluride flux method, which show a metallic behavior and low work function.

Cited by 1 publication

References 47 publications

Nonlinear optical absorption of TiTe₂ nanosheets and its application for pulse laser generation

Nonlinear optical absorption of TiTe₂ nanosheets and its application for pulse laser generation

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Single-crystal growth of layered metallic materials of TiTe2 based on a polytelluride flux method

Abstract: TiTe2 single crystals were grown via a polytelluride flux method, which show a metallic behavior and low work function.

Cited by 1 publication

References 47 publications

Nonlinear optical absorption of TiTe2 nanosheets and its application for pulse laser generation

Nonlinear optical absorption of TiTe2 nanosheets and its application for pulse laser generation

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Product

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Single-crystal growth of layered metallic materials of TiTe₂ based on a polytelluride flux method

Nonlinear optical absorption of TiTe₂ nanosheets and its application for pulse laser generation

Nonlinear optical absorption of TiTe₂ nanosheets and its application for pulse laser generation