Four-wave mixing in the far infrared from free carriers in n-type indium antimonide.
Far-infrared techniques have been developed that make possible the first observation to our knowledge of resonant four-wave mixing of submillimeter-wave radiation in n-type InSb maintained at 2 K. The dependences of the emission strength on dc magnetic field, circular polarization, and carrier concentration demonstrate that the resonant nonlinear process involves the collective excitations of the electron gas.
R M
RM
Hart
G A
GA
Rodríguez
A J
AJ
Sievers