Abstract

The generation of picosecond electromagnetic pulses in the frequency range of 100 GHz to above 10 THz using ultrashort laser pulses is a well established technique by now. Over the past years, several different attempts have been made to increase the THz efficiency and output power, respectively [1,2]. Especially, tomographic applications and spatial resolved spectroscopy require powerful THz radiation in order to accelerate the data acquisition while preserving a sufficient high signal-to-noise ratio [3]. However, still today, phase sensitive THz measurements of extended objects generally require several minutes, hours or even days, depending on the size and the intended resolution of the object.

© 2009 IEEE