抄録
Technologies in the far infrared region are developing rapidly and utilize in many aspects of human life. The far infrared wavelength region is defined from 25 to 1000µm based on the spectrum of molecular rotating in this issue. The radiation sources are many types of molecular laser, free electron laser, and gyrotron with high power. The detection techniques include an antenna receiving, a hot-electron- and a sophisticated quantum- detector. This special issue compiles modern technologies with excellent applications in the far infrared region.
