Argonne National Laboratory

Compact High-Power THz Emission

Left: BSCCO micro-mesa for THz emission from synchronized intrinsic Josephson junctions due to its layered structure. Right: Temperature maps of the BSCCO resonator. A hot-spot nucleates in the lower left corner and jumps to the center on increasing the bias current.

Left: BSCCO micro-mesa for THz emission from synchronized intrinsic Josephson junctions due to its layered structure. Right: Temperature maps of the BSCCO resonator. A hot-spot nucleates in the lower left corner and jumps to the center on increasing the bias current.

The Josephson effect occurring intrinsically between the CuO2-bilayers in Bi2Sr2CaCu2O8+δ (BSCCO) enables the fabrication of compact sources of coherent THz radiation. Here, we explore the non-linear collective states that arise from the interplay between the synchronization of large arrays of Josephson junctions and non-uniform temperature distribution by patterned heaters to control the formation of hot-spots and investigate their relation to high-power THz emission and the possibility to synchronize large resonator arrays capable of delivering higher emission power.