Ultrafast response of dielectric properties of monolayer phosphorene to femtosecond laser
| العنوان: | Ultrafast response of dielectric properties of monolayer phosphorene to femtosecond laser |
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| المؤلفون: | Lan Jiang, Feng Wang, Liangti Qu, Yongfeng Lu, Gaoshi Su, Xiaoqin Zhang, Xiaoxing Su |
| المصدر: | Journal of Applied Physics. 121:173105 |
| بيانات النشر: | AIP Publishing, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Materials science, business.industry, Band gap, Physics::Optics, General Physics and Astronomy, 02 engineering and technology, Dielectric, 021001 nanoscience & nanotechnology, Laser, 01 natural sciences, law.invention, Condensed Matter::Materials Science, Phosphorene, chemistry.chemical_compound, chemistry, law, 0103 physical sciences, Femtosecond, Monolayer, Optoelectronics, Transient response, 010306 general physics, 0210 nano-technology, business, Ultrashort pulse |
| الوصف: | Phosphorous consisting of only a few layers, or phosphorene, is a two-dimensional material with high carrier mobility and a useful and adjustable band gap. In this paper, we studied the ultrafast response of the dielectric properties of monolayer phosphorene to femtosecond laser pulses by employing the time-dependent density functional theory. The simulation results showed that, as a result of femtosecond laser irradiation, the dielectric function of monolayer phosphorene exhibited a negative divergence of its real part at low frequency and a remarkable “quasi-exciton” absorption peak of its imaginary part. We inferred that this type of response was induced by electron-hole pairs excited by the femtosecond laser. Moreover, we showed how the degrees of freedom (intensity and polarization) of the laser pulse could be helpful for the manipulation of the system transient response. The anisotropic dielectric response of monolayer phosphorene was also observed. Our work revealed the potential applications of mo... |
| تدمد: | 1089-7550 0021-8979 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::abcb9ed07d582f4c68ad8b07ea91588e https://doi.org/10.1063/1.4982072 |
| رقم الأكسشن: | edsair.doi...........abcb9ed07d582f4c68ad8b07ea91588e |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Scitation. | تدمد: | 10897550 00218979 |
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