Abstract-Single-shot terahertz spectrometer using a microbolometer camera

Dogeun Jang, Hanran Jin, Ki-Yong Kim

https://arxiv.org/abs/2006.03220

We demonstrate a single-shot terahertz spectrometer consisting of a modified Mach-Zehnder interferometer and a microbolometer focal plane array. The spectrometer is simple to use and can measure terahertz field autocorrelations and spectral power with no moving parts and no ultrashort-pulsed laser. It can effectively detect radiation at 10∼40 THz when tested with a thermal source. It can be also used to measure the complex refractive index of a sample material. In principle, it can characterize both laser-based and non-laser-based terahertz sources and potentially cover 1∼10 THz with specially-designed terahertz microbolometers.