|Terahertz wide range tunable cyclotron resonance p-Ge laser |
Conference: 16th International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostruc (Montpellier, FR, 2009-08-24)
We present a Terahertz (THz) p-Ge laser operating in a cyclotron resonance (CR) mode. Thanks to the use of the optimum crystallographic orientation of p-Ge with respect to crossed E(perpendicular to)B fields, the laser line frequency is continuously tunable in the range 1.2-2.8 THz (40-90 cm(-1)) with the linewidth being 6 GHz (0.2 cm(-1)). We also show that due to such a wide CR radiation range, the laser can serve as a base for a THz spectrometer.