Chemical and physical systems undergoing change display spectral signatures from the
radio frequency to the X-ray region of the electromagnetic spectrum. This has led to the …

Terahertz signals were until recently an almost unexplored area of research due to the
difficulties in generation and detection of electromagnetic fields at these wavelengths …

Laser pulses with a power of 10 12 W and a duration of 10− 13 s were focused onto both
gas and solid targets. Strong emission of pulsed radiation at terahertz frequencies was …

A highly important area where semiconductors and semimetals technology plays a major
role is that of optical Sensing devices. Receiving initial impetus because of infrared detector …

The interaction between high-intensity, ultrashort laser pulses and plasmas leads to the
emission of coherent, short-pulse radiation at terahertz frequencies. In this work we discuss …

We report a broadband coherent terahertz detection system using GaP as a free-space
electro-optic field sensor with a demonstrated 3 dB bandwidth of 3.6 THz, useful bandwidth …

We have generated sub-single-cycle pulses of electromagnetic radiation with pulse
energies as high as 0.8 μJ and pulse lengths< 500 fs. The 10-dB width of the spectrum is 1.5 …

The authors describe the saturation properties of ultrafast pulsed electromagnetic radiation
generated by large-aperture photoconducting antennas as a function of optical excitation …

Recent development of the terahertz time domain spectroscopy (THz-TDS) and its
application to solids have been reviewed. This spectroscopy is unique in that the time …

We show that far-infrared radiation can be generated in the depletion field near
semiconductor surfaces via the inverse Franz-Keldysh effect or electric-field-induced optical …