ШИРОКОДИАПАЗОННЫЙ СПЕКТРОМЕТР ВЫСОКОГО РАЗРЕШЕНИЯ ТГЦ ЧАСТОТНОГО ДИАПАЗОНА
A possibility to develop a high-resolution terahertz (THz) spectrometer for a wide range of tasks is considered. The proposed spectrometer consists of a synthesizer based on a Gunn generator and a frequency multiplier based on a semiconductor superlattice as a radiation source, as well as a NbN hot-electron bolometer in a direct-detection mode as a THz radiation receiver. We present some experimental results for the spectrometer: the absorption lines of H 2O (1.92 THz, 17 th harmonic) and of HDO (1.49 THz, 13 th harmonic) have been registered. The results obtained are analyzed and further prospects to improve the spectrometer characteristics are considered.