Terahertz Wave Generation in Two-Dimensional MXenes under Femtosecond Pulsed Laser Illumination
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866909972951990272 |
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| author | Choobini, A. A. Molavi Chimeh, A. |
| author_facet | Choobini, A. A. Molavi Chimeh, A. |
| contents | The efficient generation of terahertz (THz) waves in two-dimensional (2D) MXene layers driven by near-infrared femtosecond laser pulses is demonstrated through predictive simulations. Employing a novel hydrodynamic model that self-consistently captures nonlinearities from electric, magnetic, and convective interactions with a minimal set of material parameters. The coupled hydrodynamic-Maxwell equations are solved via finite-difference time-domain (FDTD) methods to resolve the spatiotemporal dynamics of laser-induced carriers and THz emission. The results reveal strong, tunable THz output dependent on laser (intensity, polarization, incidence angle), material (composition, carrier density, temperature), and struc-tural (layer thickness, substrate) parameters. These predictions offer verifiable guidelines for experiments and position MXenes as versatile platforms for compact, broadband THz sources in on-chip photonics and 6G communications. This work establishes a robust, self-contained framework for modeling ultrafast nonlinear optics in 2D materials. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2507_11656 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Terahertz Wave Generation in Two-Dimensional MXenes under Femtosecond Pulsed Laser Illumination Choobini, A. A. Molavi Chimeh, A. Optics Plasma Physics The efficient generation of terahertz (THz) waves in two-dimensional (2D) MXene layers driven by near-infrared femtosecond laser pulses is demonstrated through predictive simulations. Employing a novel hydrodynamic model that self-consistently captures nonlinearities from electric, magnetic, and convective interactions with a minimal set of material parameters. The coupled hydrodynamic-Maxwell equations are solved via finite-difference time-domain (FDTD) methods to resolve the spatiotemporal dynamics of laser-induced carriers and THz emission. The results reveal strong, tunable THz output dependent on laser (intensity, polarization, incidence angle), material (composition, carrier density, temperature), and struc-tural (layer thickness, substrate) parameters. These predictions offer verifiable guidelines for experiments and position MXenes as versatile platforms for compact, broadband THz sources in on-chip photonics and 6G communications. This work establishes a robust, self-contained framework for modeling ultrafast nonlinear optics in 2D materials. |
| title | Terahertz Wave Generation in Two-Dimensional MXenes under Femtosecond Pulsed Laser Illumination |
| topic | Optics Plasma Physics |
| url | https://arxiv.org/abs/2507.11656 |