A turn-up for terahertz

A technique to increase the power of the source in a terahertz time-domain spectrometer has been demonstrated by researchers at Temple University in the US. By mixing a low-cost continuous-wave laser with a femtosecond (fs) pump laser beam, C. Ryu and S. G. Kong increased the power of the terahertz radiation; a result which could enable future terahertz spectrometers to be cost-effective yet powerful enough for real-world remote sensing applications.