Applications using high-T(c) superconducting terahertz emitters

Using recently-developed THz emitters constructed from single crystals of the high-T(c) superconductor Bi(2)Sr(2)CaCu(2)O(8+δ), we performed three prototype tests of the devices to demonstrate their unique characteristic properties for various practical applications. The first is a compact and simple transmission type of THz imaging system using a Stirling cryocooler. The second is a high-resolution Michelson interferometer used as a phase-sensitive reflection-type imaging system. The third is a system with precise temperature control to measure the liquid absorption coefficient. The detailed characteristics of these systems are discussed.