Supra-THz semiconductor electronics for space-borne Earth observations

The project will establish frontline semiconductor terahertz electronics for far-infrared space instruments by exploring integrated Schottky diode mixers.

The goal is to obtain high receiver sensitivity and stability for low power consumption and, thereby, enable space-borne observations in the 3-5 THz frequency range.

Terahertz measurements of the atmosphere are made routinely to monitor and reveal physical and chemical processes related to weather and climate change.

New space initiatives, using constellations of terahertz receivers on small satellites, can help to gain further data and insights about the climate system.

For atmosphere science, there is a need for a terahertz receiver without active cryogenic cooling that can operate over a broad ambient temperature range with sufficient sensitivity and can make observations over a long time.

For the supra-terahertz band (>3 THz), several challenges, such as power consumption and inefficient coupling to the terahertz radiation, leave a gap in semiconductor technology.

Hence, future Earth and space science missions need new compact heterodyne receiver solutions with improved energy conversion efficiency.

The project will explore advanced fundamental mixer topologies using the in-house state-of-the-art Schottky diode technology at Chalmers.

The outcome will enable compact, efficient and advanced room-temperature heterodyne receivers for far-infrared space science instruments and trigger future research on terahertz electronics in various applications.