The prototype of a THz spectroscopic camera based on low temperature mesoscopic devices is presented. The core of this system is an array of Quantum-Dots coupled to Quantum Point Contact sensors. Readout electronics is based on Time Domain Multiplexing combined with Lock-in technique. Results show that such system can reach the sensitivity needed to detect THz emission of materials in a fully passive way.
- Mesoscopic sensors
- quantum dot sensor
- THz spectroscopy
- time domain multiplexing
Dell'Anna, M., Antonov, V., Bagliani, D., Biasotti, M., Coutaz, J. L., Gatti, F., Kiviranta, M., Kubatkin, S., Otto, E., Sypek, M., & Spasov, S. (2012). THz spectroscopy using low temperature mesoscopic devices. Journal of Low Temperature Physics, 167(3-4), 467-472. https://doi.org/10.1007/s10909-012-0599-2