Video illustrating the principles of Optical Pump Terahertz Probe Spectroscopy. This is an extension of the technique illustrated in http://www.youtube.com/watch?v=FM9cdKFw9iE allowing the acquisition of time resolved spectra . See http://www-thz.physics.ox.ac.uk for more information
This demo presents a cost-effective way to increase the power of terahertz (THz) radiation by mixing an inexpensive continuous-wave (CW) laser. Higher-power THz radiation would give a higher SNR as well as an increase in the sensing range.