On the possibility of a terahertz light emitting diode based on a dressed quantum well

• المؤلفون الرئيسيون: Mandal, S., Dini, K., Kibis, O. V., Liew, T. C. H.
• مؤلفون آخرون: School of Physical and Mathematical Sciences
• التنسيق: مقال
• اللغة: English
• منشور في: 2020
• الموضوعات: Science::Physics; Terahertz LED; Quantum Well
• الوصول للمادة أونلاين: https://hdl.handle.net/10356/137286
• المؤسسة: Nanyang Technological University

We consider theoretically the realization of a tunable terahertz light emitting diode from a quantum well with dressed electrons placed in a highly doped p-n junction. In the considered system the strong resonant dressing field forms dynamic Stark gaps in the valence and conduction bands and the electric field inside the p-n junction makes the QW asymmetric. It is shown that the electrons transiting through the light induced Stark gaps in the conduction band emit photons with energy directly proportional to the dressing field. This scheme is tunable, compact, and shows a fair efficiency.