Inaugural speech prof. N. Llombart Juan and prof.dr. J.A. Baselmans (EWI): terahertz

11 October 2019 15:00 - Location: Aula, TU Delft - By: webredactie

The Emerging of Quasi-Optical Systems in THz Sensing and Communications

Inaugural lecture Prof. N. Llombart

Quasi-optics concerns the propagation of electromagnetic radiation when the size of the wavelength is comparable to the size of the optical components, where diffraction phenomena are relevant. Quasi-optical systems have been extensively used in the THz frequency range for space applications. In those, the use of electrically large components that focus the radiation onto small detecting devices has been fundamental to overcome the lack of sensitivity in THz devices for the detection of faint sources.

Because of the advancement in integrated technology, and the need for bandwidth, the world-wide industry is looking now towards higher frequencies. The larger available bandwidth at these higher frequencies will enable much faster wireless links, as well as better resolution to sense the environment from a distance. In those scenarios, new emerging Quasi-optical systems will be fundamental to reach Tbps wireless speeds at low power and small processing times, as well as mm-resolutions in real time.

The lecture will provide an overview of the main scientific contributions in the field by Prof Llombart, as well as the future prospects. 

 

Revealing the distant universe with superconducting electronics

Inaugural lecture Prof. dr. J.A. Baselmans

Far infrared or Terahertz radiation, loosely defined between 100 GHz and 10 THz, contains a wealth of information about the cold and distant universe. Only superconducting devices allow the detection of this radiation with enough sensitivity for astronomical applications. Importantly, an efficient, broad band imaging spectrometer for this wavelength range does not exist and this is the focus of my research. I have a shared position for 50% in Delft and for 50 in SRON, the Netherlands Institute for Space Research. The combination of the two allowing the creation of truly revolutionary new instrumentation for far-infrared astronomy. The key development is in the on-chip integration of radiation coupling, spectral filtering and detection to create the aforementioned spectroscopic imaging systems for astronomy. The first prototype, DESHIMA, has very recently been successfully demonstrated on the ASTE telescope in Chile.