講座

テラヘルツ･遠赤外分光
�V. 超高速分光

Terahertz ･ Far-Infrared Spectroscopy
�V. Ultrafast Spectroscopy

萩行正憲
Masanori HANGYO

　The principle and implementation of the terahertz time domain spectroscopy (THz-TDS) is reviewed. The examples of the applications of the THz-TDS to various samples are shown.

Keywords: terahertz radiation, photoconductive antenna, terahertz time domain spectrscopy (THz-TDS), ellipsometry, magnetooptical effect, femtosecond laser