Our most recent work reports how a semiconductor quantum cascade laser (QCL) can amplify the THz pulses of a TDS system using gain switching. This work has the potential to increase the use of ...

The ability to tailor the emission wavelength of a QC laser just by changing layer thicknesses and applied bias made this type of emitter a natural choice for the realization of a terahertz ...

Tell me about the origins of quantum cascade lasers in the terahertz region? The quantum cascade laser (QCL) concept was first proposed as early as 1971, but it took almost a quarter of a century ...