Controlling negative refractive index of degenerated three-level $$\Lambda $$-type system by external light and magnetic fields
| العنوان: | Controlling negative refractive index of degenerated three-level $$\Lambda $$-type system by external light and magnetic fields |
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| المؤلفون: | Le Van Doai, Nguyen Huy Bang |
| المصدر: | The European Physical Journal D. 75 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Physics, Coupling, Electromagnetically induced transparency, business.industry, Frequency band, fungi, Optical physics, food and beverages, Physics::Optics, Atomic and Molecular Physics, and Optics, Magnetic field, Light intensity, Optics, business, Refractive index, Computer Science::Databases, Sign (mathematics) |
| الوصف: | We have achieved the negative refractive index for the probe light in a degenerated three-level $$\Lambda $$ -type atomic medium under electromagnetically induced transparency. The width of the frequency band of the negative refractive index can be changed by adjusting the coupling light intensity, while the position of the frequency band of the negative refractive index can be shifted to low or high frequency region by varying the coupling light frequency or the external magnetic field. Furthermore, the positive refractive index for a given probe frequency can be converted to the negative refractive index and vice versa by adjusting the strength or the sign of the magnetic field. This means that we can use the external magnetic field as a “knob” to control the sign of the refractive index of the material which can obtain the desired material with positive or negative index. |
| تدمد: | 1434-6079 1434-6060 |
| DOI: | 10.1140/epjd/s10053-021-00275-5 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::6c321f7b5ce92e95b93e9cb88a57d96b https://doi.org/10.1140/epjd/s10053-021-00275-5 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........6c321f7b5ce92e95b93e9cb88a57d96b |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14346079 14346060 |
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| DOI: | 10.1140/epjd/s10053-021-00275-5 |