TERASSE · Terahertz Antennas with Self-amplified Spontaneous Emission

Terahertz Antennas with Self-amplified Spontaneous Emission

The main goal of the TERASSE project has been to contribute to the development of Terahertz (THz) technology by addressing two overarching objectives: OB.1 – To investigate and demonstrate novel nanomaterials and quantum mechanisms in the THz range (WP1–3). OB.2 – To create a network of expertise in quantum and nanoelectronics, and to facilitate knowledge sharing (WP4). Terahertz technology holds significant promise for society due to its many advantages over existing technologies. These include the potential to substantially enhance communication systems—such as advancing from 5G to 6G in mobile technology—and the ability to develop diagnostic tools with resolutions comparable to X-rays, but operating at non-ionizing frequencies. One of the main challenges in advancing THz technology lies in the limitations of conventional materials. The THz frequency range is too high for traditional microwave technologies, which suffer from excessive losses in standard materials. At the same time, THz frequencies are too low for optical technologies, as they lead to decoherence of optical signals. However, advances in nanotechnology have introduced new materials that offer promising solutions. Additionally, the study of quantum effects has opened up possibilities for novel THz transmission devices. Both of these aspects were explored within the TERASSE project. The first objective was addressed by investigating various types of nanostructured materials—such as graphene nanoribbons, graphene/polymer sandwiches with embedded mesoscopic structures, and atomic chains like transition metal dichalcogenides and graphene dots. These materials were fabricated and characterized for potential use in the THz range. Moreover, new physical mechanisms were studied, including the excitation of mesoscopic structures through shot noise, Rabi and Rabi-Bloch oscillations, and direct interband THz transitions. These mechanisms were modeled, and the models were used to explore the characteristics of novel THz devices, such as emitters and detectors. Experiments were also conducted to demonstrate these mechanisms and provide proof of concept for the proposed ideas. The second objective—building a network of expertise—was achieved through the secondment of partner researchers, supported by strong training and dissemination efforts. The project involved a large number of participants (20 early-stage and 17 experienced researchers) and fostered strong collaboration between theoretical and experimental academic partners, as well as between academia and industry. Training and dissemination activities, including summer courses and dedicated conference sessions, further contributed to establishing a stable and lasting network of collaboration.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз