Use of THz time-domain spectroscopy for Plasma Diagnostics applications

The Terahertz band of the electromagnetic spectrum is defined as the range of frequency between microwaves and mid-infrared light, covering the region where electronic and optical technologies overlap. Recently, femtosecond laser pulses have been used to generate extremely broadband (100GHz to 30THz) single-cycle THz pulses. These pulses can be detected coherently with very high sensitivity, and may be used for Time-Domain Spectroscopy (TDS) experiments on a variety of systems. The instrumentation used to perform THz TDS for frequency >100 GHz can be applied to Plasma Diagnostics by redesigning and arranging the system and the optics to channel the beam reflected (or transmitted) by the plasma into the detection section of the instrument. The wide frequency range, 200 GHz up to several THz, covers a very large range of plasma conditions in a Tokamak. In 2010 a Collaboration between ENEA Frascati and Oxford Terahertz Photonics Group has started on the subject. This worskhop will offer the opportunity to discuss objective, potential and possibilities of this research project.

The THz TDS Spectrometer in Oxford

Workshop held at ENEA CR Frascati - Thursday 13 and Friday 14 October 2011 - Program:

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