Abstract

Few-cycle terahertz-pulses, i.e., very short pulses of electromagnetic radiation with a spectral content in the 0.1 to 10 THz range, are a versatile tool for a large number of applications. Some of these are likely to be used in scientific laboratories only, whereas others show a great practical potential. One example are mail screening systems where one makes use of the possibility to acquire spectroscopic information even through packaging materials like paper or plastic that are transparent to terahertz waves. Another example is the quality control in production facilities, since the coherent or phase-resolved detection of the terahertz pulses allows to spot thickness inhomogeneities or air holes in workpieces.

© 2007 IEEE