Terahertz wave emission from mesoscopic crystals of BSCCO

We study the Terahertz (THz) emission mechanism in BSCCO with an external magnetic field theoretically. The total power is proportional to the square of the number of layers and the frequency. Under the small size limitation, the angular distribution is similar to that in the dipole emission. The present theoretical results for THz power output are in the same order of magnitude as the experimental ones, in contrast with previous simulations. A series of size-dependent intrinsic frequencies are also observed. When the external frequency induced by the external current resonates with intrinsic ones, the distinct THz emission is observed.