The millimeter-wave radio waves used in CMB experiments have various applications beyond cosmology, including communication, meteorology, and industry. 

To efficiently collect and detect this light, it is essential that optical components (mirrors, lenses, and filters), semiconductors, and mechanical structures stably operate at cryogenic temperatures.

We aim to develop broadband and high-precision cryogenic devices for applications in next-generation industries such as space and extraterrestrial environments. 

In particular, we are conducting research on millimeter-wave polarization plates, anti-reflection coatings, cryogenic driving mechanisms and semiconductors.