MXene (Ti2NTx): Synthesis, characteristics and application as a thermo-optical switcher for all-optical wavelength tuning laser

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  • ReceivedApr 10, 2020
  • AcceptedMay 22, 2020
  • PublishedJul 17, 2020



the State Key Research Development Program of China(2019YFB2203503)

the National Natural Science Foundation of China(61435010,61575089,61705140,61805146)

and the Science and Technology Innovation Commission of Shenzhen(JCYJ20180305125141661,JCYJ20180307164612205,GJHZ20180928160209731)


This research was supported by the State Key Research Development Program of China (2019YFB2203503), the National Natural Science Foundation of China (61435010, 61575089, 61705140 and 61805146), and the Science and Technology Innovation Commission of Shenzhen (JCYJ20180305125141661, JCYJ20180307164612205, and GJHZ20180928160209731). The authors also acknowledge the support from the Instrumental Analysis Center of Shenzhen University (Xili Campus).

Interest statement

These authors declare no conflict of interest.

Contributions statement

Xu J and Huang W fabricated the samples; Wang C, Wang Y and Song Y performed the experiments; Wang C and Xu J wrote the paper with support from Zhang H, Liu J and Huang W. All authors contributed to the general discussion.

Author information

Cong Wang received his BSc degree at Shandong Normal University in 2019. Now he is a doctoral student at Shenzhen University. His research interest focuses on the 2D nanomaterials, optical modulator and nonlinear optics.

Weichun Huang received his BSc degree in chemistry at Soochow University in 2012, and then he pursued his PhD degree in polymer chemistry and physics at Soochow University (2017). From 2017 to 2019, he worked as a postdoctoral fellow in Prof. Han Zhang’s group at Shenzhen University. Then, he worked as a full professor at Nantong University. His research interest focuses on the synthesis and applications of 2D nanomaterials.


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  • Figure 1

    Characterizations of the as-fabricated Ti2NTx nanosheets. (a) FESEM image of the etched Ti2AlN. (b) low-magnification TEM image; (c) HRTEM image (inset is the SAED pattern); (d) AFM image of exfoliated Ti2NTx nanosheets. (e, f) Height profiles along the lines in (d). (g) UV-visible spectrum of the Ti2NTx nanosheets dispersion.

  • Figure 2

    (a) The Ti2NTx-deposited microfiber and infrared thermogram. (b) The experimental setup of AOM.

  • Figure 3

    Experimental results of the all-optical phase modulator. (a) The interferometric spectrum. (b) Output spectrum at different powers. (c) Phase shift and wavelength shift versus control light powers.

  • Figure 4

    (a) Experimental setup of the wavelength tuning laser based on AOM. (b) Output spectrum without AOM. (c) Output spectrum on different pump powers. (d) Center wavelength versus pump power. (e) The spectral width and side-mode suppression ratio at different wavelengths.

  • Figure 5

    (a) The measured interferometric spectrum. (b) Typical laser spectrum at the control light power of 0 mW. (c) Laser spectra obtained at different control light powers. (d) Typical laser spectrum at the control light power of 20 mW.


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